From joe at begriffs.com  Thu Nov  1 05:39:34 2018
From: joe at begriffs.com (Joe Nelson)
Date: Thu, 1 Nov 2018 00:39:34 -0500
Subject: OpenBSD Upgrade GtG?
In-Reply-To: <20181031100343.cknnbg2lrqwda6dl@19a6.tech>
References: <20181024000713.GA69549@begriffs.com>
 <20181024021624.zxfekr5tedizjb52@19a6.tech>
 <20181024024042.GA79416@begriffs.com>
 <20181024032252.GA1815@nobelware.com>
 <CABSwF4y7_OxoDOGBRG727PCwvVXOUhxOhDaOaHxw48CAXSPSMw@mail.gmail.com>
 <20181024223640.q6vhh27dkyltka74@19a6.tech>
 <20181030041401.GC31915@begriffs.com>
 <20181030122506.op73zyphjhigor5g@19a6.tech>
 <20181031042703.GB9674@begriffs.com>
 <20181031100343.cknnbg2lrqwda6dl@19a6.tech>
Message-ID: <20181101053934.GA69418@begriffs.com>

> > Maybe one of you guys can handle providing the food this time?
> I can make that happen.

Thank you, appreciate it.

> Do you have any recommendations on where to get pizza

I used https://www.parkwaypizzamn.com and liked it OK.

> and how much to get?

The tricky step is to estimate how many people will attend, and that's
why I always send out an email to ask. It's a little simpler now that
our group is smaller because you can count on a "yes" RSVP more than you
could on meetup.com.

Next, take your estimate and plug it into the amazing pizza calculator:
https://calculate-this.com/how-many-pizzas-buy-calculator
That site has turned it into a bit of a science, even helping determine
what toppings to get. It asks you what size of pizzas to calculate, and
for reference I always ordered the large size for our past meetings.

For beverages I think it's fun to have beer at an event like this, but
it's a good idea to provide bottled water as well for people who aren't
into the beer thing. I don't know how good the tap water is in the hack
factory, it has always seemed a bit industrial to me, hence the bottled
water.

I can bring paper plates and napkins.

From kurtis at riseup.net  Thu Nov  1 05:58:00 2018
From: kurtis at riseup.net (kurtis)
Date: Thu, 01 Nov 2018 05:58:00 +0000
Subject: OpenBSD Upgrade GtG?
In-Reply-To: <20181101053934.GA69418@begriffs.com>
References: <20181024000713.GA69549@begriffs.com>
 <20181024021624.zxfekr5tedizjb52@19a6.tech>
 <20181024024042.GA79416@begriffs.com> <20181024032252.GA1815@nobelware.com>
 <CABSwF4y7_OxoDOGBRG727PCwvVXOUhxOhDaOaHxw48CAXSPSMw@mail.gmail.com>
 <20181024223640.q6vhh27dkyltka74@19a6.tech>
 <20181030041401.GC31915@begriffs.com>
 <20181030122506.op73zyphjhigor5g@19a6.tech>
 <20181031042703.GB9674@begriffs.com>
 <20181031100343.cknnbg2lrqwda6dl@19a6.tech>
 <20181101053934.GA69418@begriffs.com>
Message-ID: <2d59091b-1a20-2586-0df0-9e466130fe17@riseup.net>

Joe Nelson:> The tricky step is to estimate how many people will attend,
and that's
> why I always send out an email to ask. It's a little simpler now that
> our group is smaller because you can count on a "yes" RSVP more than you
> could on meetup.com.

Yeah, I'd recommend sending an email with a different subject about the
meeting because I don't use any BSD distros, so I almost stopped reading
this thread, but I would maybe come to a meeting about it since you guys
don't meet super often and it'd be cool to learn a bit about OpenBSD.

From samuel.stuewe at gmail.com  Thu Nov  1 13:27:56 2018
From: samuel.stuewe at gmail.com (Sam Stuewe)
Date: Thu, 1 Nov 2018 08:27:56 -0500
Subject: OpenBSD Upgrade GtG?
In-Reply-To: <20181101053934.GA69418@begriffs.com>
References: <20181024000713.GA69549@begriffs.com>
 <20181024021624.zxfekr5tedizjb52@19a6.tech>
 <20181024024042.GA79416@begriffs.com> <20181024032252.GA1815@nobelware.com>
 <CABSwF4y7_OxoDOGBRG727PCwvVXOUhxOhDaOaHxw48CAXSPSMw@mail.gmail.com>
 <20181024223640.q6vhh27dkyltka74@19a6.tech>
 <20181030041401.GC31915@begriffs.com>
 <20181030122506.op73zyphjhigor5g@19a6.tech>
 <20181031042703.GB9674@begriffs.com>
 <20181031100343.cknnbg2lrqwda6dl@19a6.tech>
 <20181101053934.GA69418@begriffs.com>
Message-ID: <CABSwF4woY=R7HZ==PXOBSfu-12GuGUxfqYMoyOKN1LQXYJ01zw@mail.gmail.com>

On 11/1/18, Joe Nelson <joe at begriffs.com> wrote:
> Next, take your estimate and plug it into the amazing pizza calculator:
> https://calculate-this.com/how-many-pizzas-buy-calculator
> That site has turned it into a bit of a science, even helping determine
> what toppings to get. It asks you what size of pizzas to calculate, and
> for reference I always ordered the large size for our past meetings.
Please count me as a ?Big Eater? in that calculator. I will gladly
throw in a few bucks to help cover the price!

All the best,

-Sam

From dave.bucklin at gmail.com  Mon Nov  5 21:28:34 2018
From: dave.bucklin at gmail.com (Dave Bucklin)
Date: Mon, 05 Nov 2018 15:28:34 -0600
Subject: Hack Factory Open House 11/7
Message-ID: <19B54B89-66DF-4FDB-9E5F-84D81F3850A7@gmail.com>

Wednesday, 7-9PM at the Hack Factory, 3119 East 26th Street. Please RSVP if you plan to attend. So far, I have myself, Joe, Yo, Sam, Nicholas, Erik, and maybe Kurtis.

From samuel.stuewe at gmail.com  Mon Nov  5 21:33:37 2018
From: samuel.stuewe at gmail.com (Sam Stuewe)
Date: Mon, 5 Nov 2018 15:33:37 -0600
Subject: Hack Factory Open House 11/7
In-Reply-To: <19B54B89-66DF-4FDB-9E5F-84D81F3850A7@gmail.com>
References: <19B54B89-66DF-4FDB-9E5F-84D81F3850A7@gmail.com>
Message-ID: <CABSwF4x0KguE4DLhXTZWPT5OQCGYqpuafLVaj3QWAx+m=SEtKw@mail.gmail.com>

I am indeed planning to attend!

All the best,

-Sam

On 11/5/18, Dave Bucklin <dave.bucklin at gmail.com> wrote:
> Wednesday, 7-9PM at the Hack Factory, 3119 East 26th Street. Please RSVP if
> you plan to attend. So far, I have myself, Joe, Yo, Sam, Nicholas, Erik, and
> maybe Kurtis.
>

From nompelis at nobelware.com  Mon Nov  5 22:36:32 2018
From: nompelis at nobelware.com (Ioannis Nompelis)
Date: Mon, 5 Nov 2018 22:36:32 +0000
Subject: Hack Factory Open House 11/7
In-Reply-To: <CABSwF4x0KguE4DLhXTZWPT5OQCGYqpuafLVaj3QWAx+m=SEtKw@mail.gmail.com>
References: <19B54B89-66DF-4FDB-9E5F-84D81F3850A7@gmail.com>
 <CABSwF4x0KguE4DLhXTZWPT5OQCGYqpuafLVaj3QWAx+m=SEtKw@mail.gmail.com>
Message-ID: <20181105223632.GA28720@nobelware.com>

I will be attending. Sorry that I missed the request to RSVP.


From nompelis at nobelware.com  Tue Nov  6 04:37:45 2018
From: nompelis at nobelware.com (Ioannis Nompelis)
Date: Tue, 6 Nov 2018 04:37:45 +0000
Subject: OpenSSL and certificates for our group's work
Message-ID: <20181106043745.GA9460@nobelware.com>

I have been doing some reading, especially after Tim's suggestions on looking
into SNI for my webserver's certificates, etc, etc. As a result, I have started
to look a lot into OpenSSL. And in fact, for the first time I started to
program with it (connecting an SSL layer over sockets that do web fetches).
While reading more about OpenSSL, I ran across this:

https://www.feistyduck.com/library/openssl%2dcookbook/online/ch-openssl.html

It is far from a good book, but the narration of the examples is very good
for somebody who knows what they are looking for.

But the reason I am sending this link to the list is to propose that we setup
our VPS to also act as a Certificate Authority (CA). To clarify, this is solely
for the purpose of our group having certificate validation for testing purposes
and for only our purposes.

If you scroll to about 4/5 of the this link, you will find that it is
possible, but it involves some busy work periodically.

Think about if this adds usefulness and we will talk about it at the HackFactory
on Wed.
IN


From dave.bucklin at gmail.com  Tue Nov  6 18:35:06 2018
From: dave.bucklin at gmail.com (Dave Bucklin)
Date: Tue, 06 Nov 2018 12:35:06 -0600
Subject: Hack Factory Open House 11/7
In-Reply-To: <20181105223632.GA28720@nobelware.com>
References: <19B54B89-66DF-4FDB-9E5F-84D81F3850A7@gmail.com>
 <CABSwF4x0KguE4DLhXTZWPT5OQCGYqpuafLVaj3QWAx+m=SEtKw@mail.gmail.com>
 <20181105223632.GA28720@nobelware.com>
Message-ID: <E36A7AD5-3F94-49D1-95E0-0A7AD29E9A92@gmail.com>

Slight change of plans. The classroom at the Hack Factory is being remodeled and it's not a good place to hang out. I made a 7PM reservation for seven at Parkway Pizza just down the road, 4359 Minnehaha Ave. See you there.

Can someone bring one of those AC power distributor thingies?

From joe at begriffs.com  Wed Nov  7 22:46:45 2018
From: joe at begriffs.com (Joe Nelson)
Date: Wed, 7 Nov 2018 16:46:45 -0600
Subject: Using valgrind
Message-ID: <20181107224645.GA60437@begriffs.com>

I was doing a K&R exercise and noticed a place in the
code that might have a small memory leak. This section
https://github.com/begriffs/kr/blob/master/j-symbols.c#L35-L37 returns
NULL if either a structure or a string fail to be allocated.  However if
the structure succeeded and strdup failed then it would never free the
structure.

Rather than fix it and move on, I wondered if it would be a good
opportunity to learn some tooling. Maybe http://valgrind.org could
detect the error. Have any of you used Valgrind before?

From nompelis at nobelware.com  Wed Nov  7 23:28:06 2018
From: nompelis at nobelware.com (Ioannis Nompelis)
Date: Wed, 7 Nov 2018 23:28:06 +0000
Subject: Using valgrind
In-Reply-To: <20181107224645.GA60437@begriffs.com>
References: <20181107224645.GA60437@begriffs.com>
Message-ID: <20181107232806.GA8323@nobelware.com>

I have used Valgrid. It is _great_ but you need to know what you are doing
in order to (a) not get confused by the times that things fail spectacularly
and in a cascading manner, and (b) to be able to collect the right information.

I have used it in parallel (distributed / separate memory space per process)
applications, which is what I build at work. Basically, you executa Valgrind,
even in parallel, which jails the process in a monitored memory space, and
then injects diagnostics. It is a lot like using a debugger or disassembler.

My adviser's eldest daughter just finished her CS degree at Carnegie Mellon
(possibly the best CS dept. in the country). For their programming assignments,
they had to run them through Valgrid and deliver the output.

Personally, I do not use Valgrid unless I am handed a piece of code that I do
not know what it does and that obviously has problems, like seg-faults or
un-expected behavriou. And even this case is rare. But I am telling you that
it is very useful for such tasks.

Here are the environment modules on my desktop:

opt_gcc_mach29_ompi-1.8.0                              opt_mach4_Vrui  
opt_gcc_mach29_ompi-1.8.0_hdf5-1.8.14                  
opt_gcc_mach29_ompi-1.8.0_parmetis-4.0.3_i32r32        
opt_gcc_mach29_ompi-1.8.0_parmetis-4.0.3_i32r32_HACK   
opt_gcc_mach29_ompi-1.8.0_parmetis-4.0.3_i64r64        
opt_gcc_mach29_ompi-2.0.1                              
opt_gcc_mach29_ompi-2.0.1_hdf5-1.8.14                  
opt_gcc_mach29_ompi-2.0.1_parmetis-4.0.3_i64r64        
opt_gcc_mach29_ompi-2.0.1_petsc-3.6.4                  
opt_gcc_mach29_ompi-2.0.1_valgrind-3.12.0              
opt_gcc_mach29_ompi-2.0.1_valgrind-3.12.0_petsc-3.6.4  
opt_gcc_mach29_Wine                                    
opt_gcc_mach29_Wine64                                  
opt_gcc_valgrid-3.12.0                                 
opt_mach4_pgi-15.10_OpenMPI-1.10.1_hdf5-1.8.14         
opt_mach4_pgi-15.10_OpenMPI-1.10.1_hdf5-1.8.14f2003    
opt_mach4_pgi-15.10_OpenMPI-1.10.1_parmetis-4.0.3      
opt_mach4_pgi-15.10_OpenMPI-1.10.1_parmetis-4.0.3_64   
opt_mach4_pgi-15.10_OpenMPI-1.10.1_petsc-3.6.4 

Notice how I have some software stacks built with Valgrind in them, like
the parallel execution and parallelization libraries (OpenMPI "ompi").

We can talk about it at the meetup.


From nompelis at nobelware.com  Thu Nov  8 06:12:01 2018
From: nompelis at nobelware.com (Ioannis Nompelis)
Date: Thu, 8 Nov 2018 06:12:01 +0000
Subject: Hack Factory Open House 11/7
In-Reply-To: <E36A7AD5-3F94-49D1-95E0-0A7AD29E9A92@gmail.com>
References: <19B54B89-66DF-4FDB-9E5F-84D81F3850A7@gmail.com>
 <CABSwF4x0KguE4DLhXTZWPT5OQCGYqpuafLVaj3QWAx+m=SEtKw@mail.gmail.com>
 <20181105223632.GA28720@nobelware.com>
 <E36A7AD5-3F94-49D1-95E0-0A7AD29E9A92@gmail.com>
Message-ID: <20181108061201.GB22534@nobelware.com>

That was fun guys. Good to see everyone. The other person I was forgetting
was Paul, who lives a little farther away. What happened to him?

Also, I logged into our VPS and it appears to be running 6.4 now, but no httpd.

Sounds like Joe and Dave have failed me again. (Now picture them standing in
front of me, their necks are being constricted by an invisible "force," then
they drop dead, and I walk past them to report to the Emperor that I am taking
charge of the situation...) Will get you the solution tomorrow.

Looks like Erik has a login now. Nick and Sam will have to send SSH keys to
Dave. Nick, 'ssh-keygen --help' for the quick version. Make some trials and see
what happens. Clean up the ~/.ssh/ directory if things look strange and start
from scratch. When you are done, make use of those keys:

'cp .ssh/id_rsa .ssh/identity'
'cp .ssh/id_rsa.pub .ssh/authorized_keys'

You can concatenate as many public keys as you want to the authorized keys,
so that you can log in the system with multiple identities (should you have
any, which you appear to not have).

Send the "authorized_keys" to Dave and that will do it. Let him know what
login name you would like and if you want the "in real life" displayed with
your real name.

Talk later.
IN


From dave.bucklin at gmail.com  Thu Nov  8 09:59:47 2018
From: dave.bucklin at gmail.com (Dave Bucklin)
Date: Thu, 8 Nov 2018 03:59:47 -0600
Subject: Web Server Fixed
Message-ID: <20181108095947.bftczqgdn3wjrwvy@19a6.tech>

I noticed the following in /var/log/messages

   Nov  7 20:46:36 hh httpd[44051]: /etc/httpd.conf:9: server "frostbyte.cc" defined twice
   Nov  7 20:47:28 hh httpd[25088]: /etc/httpd.conf:9: server "frostbyte.cc" defined twice

Looking at /etc/httpd.conf, I noticed that there were two listen
directives.

   # $OpenBSD: httpd.conf,v 1.18 2018/03/23 11:36:41 florian Exp $
   
   server "frostbyte.cc" {
     listen on * port 80
     listen on :: port 80
     location "*" {
       root "/frostbyte"
     }
   }

I commented out the second one and it starts up, now.

   root at hh:/var/log#rcctl start httpd
   httpd(ok)

The man page for httpd.conf says that the listen directive can be
specified multiple times.

> listen on address [tls] port number
>     Set the listen address and port.  This statement can be specified
>     multiple times.

That same man page on address values:

> Within the sections, a host address can be specified by IPv4 address,
> IPv6 address, interface name, interface group, or DNS hostname.  If the
> address is an interface name, httpd(8) will look up the first IPv4
> address and any other IPv4 and IPv6 addresses of the specified network
> interface.  If `*' is given as an address, httpd(8) will listen on all
> IPv4 and IPv6 addresses.  0.0.0.0 means to listen on all IPv4 addresses
> and :: all IPv6 addresses.  A port can be specified by number or name.
> The port name to number mappings are found in the file /etc/services;
> see services(5) for details.

My guess is that an address of '*' already includes the ipv6 wildcard
'::', and httpd didn't like having both of them in there..

From nompelis at nobelware.com  Thu Nov  8 15:49:21 2018
From: nompelis at nobelware.com (Ioannis Nompelis)
Date: Thu, 8 Nov 2018 15:49:21 +0000
Subject: Web Server Fixed
In-Reply-To: <20181108095947.bftczqgdn3wjrwvy@19a6.tech>
References: <20181108095947.bftczqgdn3wjrwvy@19a6.tech>
Message-ID: <20181108154921.GA12154@nobelware.com>

Yup. The weirdness... Both IPv6 and IPv4 look like they are listening:

hh:nompelis {107} netstat -p tcp -a
Active Internet connections (including servers)
Proto   Recv-Q Send-Q  Local Address          Foreign Address        (state)
tcp          0      0  108.61.242.14.vu.6667  65-128-8-64.mpls.52267 ESTABLISHED
tcp          0     52  108.61.242.14.vu.ssh   iznogoud.nobelwa.44305 ESTABLISHED
tcp          0      0  *.www                  *.*                    LISTEN
tcp          0      0  *.6667                 *.*                    LISTEN
tcp          0      0  *.ssh                  *.*                    LISTEN
tcp          0      0  localhost.smtp         *.*                    LISTEN
Active Internet connections (including servers)
Proto   Recv-Q Send-Q  Local Address          Foreign Address        (state)
tcp6         0      0  *.ssh                  *.*                    LISTEN
tcp6         0      0  *.www                  *.*                    LISTEN
tcp6         0      0  *.6667                 *.*                    LISTEN
tcp6         0      0  fe80::1%lo0.smtp       *.*                    LISTEN
tcp6         0      0  localhost.smtp         *.*                    LISTEN
hh:nompelis {108} 

Maybe we should beautify the web-page with some formatting and some CSS. I can
offer a good sample from nobelware.com.

Also, you guys look so cute...
http://nobelware.com/~nompelis/hardcore_pizzanight.jpg
(I like Parkway and their beer selection.)

From joe at begriffs.com  Fri Nov  9 00:19:40 2018
From: joe at begriffs.com (Joe Nelson)
Date: Thu, 8 Nov 2018 18:19:40 -0600
Subject: Web Server Fixed
In-Reply-To: <20181108095947.bftczqgdn3wjrwvy@19a6.tech>
References: <20181108095947.bftczqgdn3wjrwvy@19a6.tech>
Message-ID: <20181109001940.GA49542@begriffs.com>

Nice debugging, good to see the web server back up!

FYI today I made a general system change for security -
https://www.openbsd.org/errata64.html

There was a nasty Xorg vulnerability affecting Linux and BSDs that
allows people to do things as root. The OpenBSD people didn't get
notified about the problem until just after they released 6.4, so the
fix wasn't part of the release. Anyway, I removed the setuid bit from
/usr/X11R6/bin/Xorg. Should have no negative impact on us because we
don't use X on the server.

From 42dch42 at gmail.com  Mon Nov 12 01:17:20 2018
From: 42dch42 at gmail.com (harv)
Date: Sun, 11 Nov 2018 19:17:20 -0600
Subject: Introduction
Message-ID: <5be8d4a2.1c69fb81.600c0.8046@mx.google.com>

Hello all,
Corresponded with Iznogood on tclug mailing list and he was kind enough
to point me towards this list.

Name: Harvey Dawes
Work: Industrial sheet metal and hvac fabricator/installer
Hobby: Poking and prodding under hood of operating systems mainly but
             really anything computer related that catches my interest.
             Meaning I am strictly an amateur.
History: Running various linux and *BSD flavors since 2003
Current: Using FreeBSD 11.2 with TrueOS (FreeBSD derivative) and
               TinyCore linux installed for when I break things beyond
               the point of being able to boot.

Don't know how much if any I'll be able to contribute but just scanning
list archives has already been educational for me.

thanks,
harv

From nompelis at nobelware.com  Mon Nov 12 16:56:29 2018
From: nompelis at nobelware.com (Ioannis Nompelis)
Date: Mon, 12 Nov 2018 10:56:29 -0600
Subject: Introduction
In-Reply-To: <5be8d4a2.1c69fb81.600c0.8046@mx.google.com>
References: <5be8d4a2.1c69fb81.600c0.8046@mx.google.com>
Message-ID: <20181112165629.GA6937@nobelware.com>

Welcome harv.

We are happy to have you around, sharing ideas, hacking, creating and learning
with us.


From salo at saloits.com  Mon Nov 12 20:20:28 2018
From: salo at saloits.com (Timothy J. Salo)
Date: Mon, 12 Nov 2018 14:20:28 -0600
Subject: Usenet over ham radio?
In-Reply-To: <20181030035652.GB31915@begriffs.com>
References: <20181020155911.GA5778@mysterium.local>
 <c724d438-e78d-b550-8e8d-a6226296a9ea@saloits.com>
 <20181030035652.GB31915@begriffs.com>
Message-ID: <440e815e-1e07-da99-473d-35aac6cd9504@saloits.com>

On 10/29/2018 10:56 PM, Joe Nelson wrote:
> Can you recommend a cheap dedicated hardware TNC, or a well-regarded
> software TNC? We would probably want to amplify the transmission at the
> gateway too -- what's a good amplifier that is compatible with the TNC?

I would look at soundcard modems, which use a PC soundcard to decode
packet radio.  There are a number of software packages out there, but
they come and go as people gain and lose interest.  One might Google
[soundcard modem] and try playing with the different packages,
probably starting with the free ones.

You might also want to build a soundcard modem that isolates your
PC from your radio.  There are a ton of circuits available.  I
assume the current Handbook has at least one circuit.

> Finally we'd want to put a UHF/VHF antenna on the roof at the Hack
> Factory. They already have a RF antenna up there, so they should
> be OK adding another. What do you think about the Comet GP-3?
> http://www.cometantenna.com/amateur-radio/base-antennas/ba-dual-band/

I don't keep up on antennas enough to have a good opinion.

I have found that some antennas requires more precise tuning than
others.  I think that you want an omnidirectional antenna that
has as much gain (as you have height, perhaps), maybe covers
most or all of the 2M band without tuning, doesn't require
temperamental tuning, and is pretty weather resistant.  (I
assume that someone has enough test equipment to tune an
antenna, but if the antenna really needs to be tuned in situ,
that could be sort of a pain.)

-tjs

From dave.bucklin at gmail.com  Mon Nov 12 22:57:56 2018
From: dave.bucklin at gmail.com (Dave Bucklin)
Date: Mon, 12 Nov 2018 16:57:56 -0600
Subject: Introduction
In-Reply-To: <5be8d4a2.1c69fb81.600c0.8046@mx.google.com>
References: <5be8d4a2.1c69fb81.600c0.8046@mx.google.com>
Message-ID: <20181112225756.zb3t5ugsvqbb5pca@19a6.tech>

On Sun, Nov 11, 2018 at 07:17:20PM -0600, harv wrote:
> Hello all,
> Corresponded with Iznogood on tclug mailing list and he was kind enough
> to point me towards this list.
> 
> Name: Harvey Dawes
> Work: Industrial sheet metal and hvac fabricator/installer
> Hobby: Poking and prodding under hood of operating systems mainly but
>              really anything computer related that catches my interest.
>              Meaning I am strictly an amateur.
> History: Running various linux and *BSD flavors since 2003
> Current: Using FreeBSD 11.2 with TrueOS (FreeBSD derivative) and
>                TinyCore linux installed for when I break things beyond
>                the point of being able to boot.
> 
> Don't know how much if any I'll be able to contribute but just scanning
> list archives has already been educational for me.
> 
> thanks,
> harv

Hello and welcome! You can learn a little more about the group at
http://frostbyte.cc. Do you have any projects that you are working on
right now?

From chris at sencjw.com  Tue Nov 13 01:04:19 2018
From: chris at sencjw.com (Chris Wilson)
Date: Mon, 12 Nov 2018 19:04:19 -0600
Subject: Hello!
Message-ID: <20181113010419.GA57462@tha-tha.local>

It looks like introductions are happening on the list right now and so I
want to get in on that!

My name is Chris Wilson and I live in Madison, WI. Joe Nelson pointed me
to this list a little while back. I work as a software developer and
have recently taken up electronics and ham radio as hobbies.

In the summer, I like to get out sailing on Lake Mendota whenever
possible. This past summer was when I finally bought a little 16ft.
Catalina boat and, other than the horrendous work to get it out of the
lake, it's a blast!

Cheers,

Chris

From nompelis at nobelware.com  Tue Nov 13 02:21:52 2018
From: nompelis at nobelware.com (Ioannis Nompelis)
Date: Mon, 12 Nov 2018 20:21:52 -0600
Subject: Hello!
In-Reply-To: <20181113010419.GA57462@tha-tha.local>
References: <20181113010419.GA57462@tha-tha.local>
Message-ID: <27E75387-5B23-4775-B4F1-7A0A001105C7@nobelware.com>

Welcome. I sail a Laser when I am not lazy. I used to race optimist as a kid and 420s as a teenager.

From dave.bucklin at gmail.com  Tue Nov 13 03:09:38 2018
From: dave.bucklin at gmail.com (Dave Bucklin)
Date: Mon, 12 Nov 2018 21:09:38 -0600
Subject: Hello!
In-Reply-To: <27E75387-5B23-4775-B4F1-7A0A001105C7@nobelware.com>
References: <20181113010419.GA57462@tha-tha.local>
 <27E75387-5B23-4775-B4F1-7A0A001105C7@nobelware.com>
Message-ID: <20181113030938.dqg4f3xtq44tgy5q@19a6.tech>

On Mon, Nov 12, 2018 at 08:21:52PM -0600, Ioannis Nompelis wrote:
> Welcome. I sail a Laser when I am not lazy. I used to race optimist as a kid and 420s as a teenager.

Yes, welcome! My girlfriend and I bought an inflatable kayak this
spring. We had a lot of fun paddling around the lakes.

From 42dch42 at gmail.com  Tue Nov 13 07:36:03 2018
From: 42dch42 at gmail.com (harv)
Date: Tue, 13 Nov 2018 01:36:03 -0600
Subject: Introduction
In-Reply-To: <20181112225756.zb3t5ugsvqbb5pca@19a6.tech>
References: <5be8d4a2.1c69fb81.600c0.8046@mx.google.com>
 <20181112225756.zb3t5ugsvqbb5pca@19a6.tech>
Message-ID: <5bea7ee4.1c69fb81.29b61.bf1c@mx.google.com>

Mon, 12 Nov 2018 16:57:56 -0600
Dave opined:
> On Sun, Nov 11, 2018 at 07:17:20PM -0600, harv wrote:
> > Hello all,
> > Corresponded with Iznogood on tclug mailing list and he was kind enough
> > to point me towards this list.
> > 
> > Name: Harvey Dawes
> > Work: Industrial sheet metal and hvac fabricator/installer
> > Hobby: Poking and prodding under hood of operating systems mainly but
> >              really anything computer related that catches my interest.
> >              Meaning I am strictly an amateur.
> > History: Running various linux and *BSD flavors since 2003
> > Current: Using FreeBSD 11.2 with TrueOS (FreeBSD derivative) and
> >                TinyCore linux installed for when I break things beyond
> >                the point of being able to boot.
> > 
> > Don't know how much if any I'll be able to contribute but just scanning
> > list archives has already been educational for me.
> > 
> > thanks,
> > harv  
> 
> Hello and welcome! You can learn a little more about the group at
> http://frostbyte.cc. Do you have any projects that you are working on
> right now?

Mainly getting FreeBSD to behave the way I want.
Biggest issue is blank ttys after starting X. The one X is on works
fine but the rest are blank and thus unusable.

Also giving feedback on TrueOS release candidates- haven't got past 2nd
page of installer yet.

And finally, polishing up a shell script and adding some bells and
whistles to it after which I'll try doing the same thing in python so I
can put a gui on it- gives me incentive to learn python something I've
been going to do for quite some time.


From nompelis at nobelware.com  Tue Nov 13 15:36:17 2018
From: nompelis at nobelware.com (Ioannis Nompelis)
Date: Tue, 13 Nov 2018 15:36:17 +0000
Subject: BSDers look here
Message-ID: <20181113153617.GA3434@nobelware.com>

I found this:

https://twitter.com/romanzolotarev/status/1057130041165955074

on this:

https://twitter.com/OpenBSDAms

(I follow Roman.)

From joe at begriffs.com  Sat Nov 17 01:13:04 2018
From: joe at begriffs.com (Joe Nelson)
Date: Fri, 16 Nov 2018 19:13:04 -0600
Subject: C study buddy?
Message-ID: <20181117011304.GA47584@begriffs.com>

Hey all, I'm learning C programming comprehensively in several
stages. The first stage was just the language itself and portability
concerns. I've finished most of the exercises in K&R, and also read
two books about portability. As a result of that, I wrote this
article about various surprising architectures and their C compilers:
https://begriffs.com/posts/2018-11-15-c-portability.html

The next stage is learning the ANSI standard library. I bought and
intend to read "The Standard C Library" by P. J. Plauger. He was part
of the design committee and discusses the motivation and choices behind
the library. The book walks you through actually writing the standard
library from scratch, and demonstrates subtle parts of the code. It also
demonstrates doing precision math.

Would anyone like to pair program this with me on the frostbyte server?

From samuel.stuewe at gmail.com  Sat Nov 17 01:39:17 2018
From: samuel.stuewe at gmail.com (Sam Stuewe)
Date: Fri, 16 Nov 2018 19:39:17 -0600
Subject: C study buddy?
In-Reply-To: <20181117011304.GA47584@begriffs.com>
References: <20181117011304.GA47584@begriffs.com>
Message-ID: <CABSwF4y=-Nh_Jq0_ZGqKA0jcNoH=f7CyqtA8ONJ-Frxg50g-uA@mail.gmail.com>

On 11/16/18, Joe Nelson <joe at begriffs.com> wrote:
> Hey all, I'm learning C programming comprehensively in several
> stages. The first stage was just the language itself and portability
> concerns. I've finished most of the exercises in K&R, and also read
> two books about portability. As a result of that, I wrote this
> article about various surprising architectures and their C compilers:
> https://begriffs.com/posts/2018-11-15-c-portability.html
I saw the post; lovely to stroll down memory lane! Well put together. :)

> The next stage is learning the ANSI standard library. I bought and
> intend to read "The Standard C Library" by P. J. Plauger. He was part
> of the design committee and discusses the motivation and choices behind
> the library. The book walks you through actually writing the standard
> library from scratch, and demonstrates subtle parts of the code. It also
> demonstrates doing precision math.
Sounds like a great next step!

> Would anyone like to pair program this with me on the frostbyte server?
Walking through exercises in the book, or on a specific project? I'm
open to talking about projects/exercises and possible solutions
anytime!

All the best,

-Sam

From joe at begriffs.com  Sat Nov 17 04:35:55 2018
From: joe at begriffs.com (Joe Nelson)
Date: Fri, 16 Nov 2018 22:35:55 -0600
Subject: C study buddy?
In-Reply-To: <CABSwF4y=-Nh_Jq0_ZGqKA0jcNoH=f7CyqtA8ONJ-Frxg50g-uA@mail.gmail.com>
References: <20181117011304.GA47584@begriffs.com>
 <CABSwF4y=-Nh_Jq0_ZGqKA0jcNoH=f7CyqtA8ONJ-Frxg50g-uA@mail.gmail.com>
Message-ID: <20181117043555.GA52891@begriffs.com>

> > I wrote this article about various surprising architectures and
> > their C compilers

> I saw the post; lovely to stroll down memory lane! Well put together. :)

Thanks! It was built out of those notes I showed you at parkway pizza.

> > Would anyone like to pair program this with me on the frostbyte
> > server?

> Walking through exercises in the book, or on a specific project? I'm
> open to talking about projects/exercises and possible solutions
> anytime!

Working through the book. Each chapter covers a different header. The
chapters are all broken down into a similar pattern:

Background
  The history behind the header, and the practices which were prevailing
  before it got standardized.
What the C Standard Says
  A relevant excerpt
Using <foo.h>
Implementing <foo.h>
Testing <foo.h>
References
  Books and further discussion
Exercises

My idea was to do the exercises obviously but maybe to try doing the
implementation ourselves as well, knowing just the background and what
the standard says. Then compare our implementation to the one listed
in the book. That would probably help us better appreciate theirs.

From nompelis at nobelware.com  Sat Nov 17 16:58:24 2018
From: nompelis at nobelware.com (Ioannis Nompelis)
Date: Sat, 17 Nov 2018 16:58:24 +0000
Subject: C study buddy?
In-Reply-To: <20181117043555.GA52891@begriffs.com>
References: <20181117011304.GA47584@begriffs.com>
 <CABSwF4y=-Nh_Jq0_ZGqKA0jcNoH=f7CyqtA8ONJ-Frxg50g-uA@mail.gmail.com>
 <20181117043555.GA52891@begriffs.com>
Message-ID: <20181117165824.GA26986@nobelware.com>

Wow, Joe! This is really doing it for the art of the craft here.

I will go read your weblog post and comment on that next. But first some
thoughts in response to your effort.

I am the most proficient in C than in any other language I know, with C++
and Fortran coming second. I never thought of C as a language in which I would
dig deep like you are doing. I thought it was a language that met all my own
expectations and objectives; it has high level functions through the stdlib,
it has libraries that all have its bindings, it is low level enough and
high level enough, it has incredibly popular and all-encompassing constructs,
it is popular, it is portable... Unix is based on it. It is fantastic.

I am now proficient enough in it to be working on large software projects
that are exclusively based on it, I am focusing on software architecture
and the language comes naturally. Which brings me to the point about libraries.
The standard library I need to get to know a little better, because there are
many things that may be extremely beneficial to just use instead of having
to invent and program, but those tend to be few in my line of work. If anyone
wants to work on other libraries, like POSIX items (threads, etc), sockets,
multi-threading with OpenMP and the like, etc, let me know. I write everything
in C. I can share code, and I will offer some examples.
IN


From nompelis at nobelware.com  Sat Nov 17 22:27:35 2018
From: nompelis at nobelware.com (Ioannis Nompelis)
Date: Sat, 17 Nov 2018 22:27:35 +0000
Subject: C study buddy?
In-Reply-To: <20181117165824.GA26986@nobelware.com>
References: <20181117011304.GA47584@begriffs.com>
 <CABSwF4y=-Nh_Jq0_ZGqKA0jcNoH=f7CyqtA8ONJ-Frxg50g-uA@mail.gmail.com>
 <20181117043555.GA52891@begriffs.com> <20181117165824.GA26986@nobelware.com>
Message-ID: <20181117222735.GA6614@nobelware.com>

I finally got the 10 minutes to read, and actually mostly understand, what was
in Joe's weblog post. It has some of the geekiest things I have ever read,
and is written in an esoteric enough language --assuming a lot of what the
reader should know to read it-- that I find myself privileged to understand it!

Take this in good spirit Joe! This is great!

I will voice this: I never thought, ever in life, of treating pointers without
type-casting, or treating anything in C without type-casting. If you want to
be that lazy, use "unions" maybe, and suffer the consequences, maybe?

It was a good read. When I was a kid, I cared less about what was inside that
8-bit processor, and went straight for "Basic" commands. Those were the days.


One more thing on using libraries, just as a tangent. I am building this...
thing... let's not worry about what it does. It has the header file shown below.
Look at the included header files to get an idea of what libraries it is using.
Maybe I am jumping a little far ahead from Joe's learning target, so feel free
to ignore me.

However...

If you want to learn POSIX threads, unix and INET sockets, the select() magic,
dynamic library loading, multi-threaded inter-process synchronization and
communication, and signal-handling, you may want to look at the single .c file
that goes with this.

Have a good weekend everyone.

#ifndef _INDAEMON_H
#define _INDAEMON_H

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <signal.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/select.h>
#include <sys/socket.h>
#include <arpa/inet.h>
#include <sys/un.h>
//#include <dlfcn.h>     // used in the .c file
//#include <pthread.h>   // used in the .c file


#define NAME_SIZE 256
#define COMM_BUF_SIZE 256

struct indaemon_worker_s {
   int istat;
};

struct indaemon_client_s {
   int istat;
   pthread_t t;
   pthread_attr_t t_attr;
   int isocket;
};

struct indaemon_data_s {
   int istat;
   int irun;
   char name[NAME_SIZE];

   // functions to execute
   void *lib_handle;
   int (*indaemon_User_Init)( void * arg );
   int (*indaemon_User_Term)( void * arg );

   // data for network operations
   int unix_socket;
   struct sockaddr_un unix_socket_name;
   char unix_socket_string[NAME_SIZE];
   int inet_socket, inet_backlog;
   struct sockaddr_in inet_socket_name;
   in_port_t inet_port;
   char inet_socket_string[NAME_SIZE];

   // data to communicate between network thread and main thread
   int imanage_pipefd[2],icontrol_pipefd[2];

   // data for the networker
   pthread_t nett;
   pthread_attr_t nett_attr;
   int inetworker_run;

   // functions to execute in the networker
   int (*indaemon_Networker_Ending)( void * arg );

   // worker threads data
   int num_workers;
   struct indaemon_worker_s *workers;

   // client threads data
   int num_clients;
   struct indaemon_client_s *clients;
};

static struct indaemon_data_s *global_ddata = NULL;

int indaemon_Start( const char name[], const char libname[] );
int indaemon_Init( struct indaemon_data_s **ddata,
                   const char name[], const char libname[] );
int indaemon_Term( struct indaemon_data_s **ddata );
int indaemon_MainLoop( struct indaemon_data_s *ddata );
void indaemon_SignalHandler( int isignal );
int indaemon_LoadLibrary( struct indaemon_data_s *ddata, const char libname[] );

void *indaemon_Thread_Networker( void * );
void *indaemon_Thread_Client( void * );
int indaemon_Thread_Networker_Ending( void *arg );
int indaemon_Thread_HandleClient( struct indaemon_data_s *s,
                                  char buffer[], 
                                  int socket_fd );
int indaemon_Thread_AttachClient( struct indaemon_data_s *s, int socket_fd );
int indaemon_Thread_DetachClient( struct indaemon_data_s *s, int socket_fd );
int indaemon_Thread_SpawnClient( struct indaemon_data_s *s, int new_socket );

int indaemon_Worker_Init( struct indaemon_worker_s *w );
int indaemon_Client_Init( struct indaemon_client_s *c );

#endif


From hello at robertdherb.com  Sat Nov 17 23:04:11 2018
From: hello at robertdherb.com (Robbie Herb)
Date: Sat, 17 Nov 2018 17:04:11 -0600
Subject: C study buddy?
In-Reply-To: <20181117043555.GA52891@begriffs.com>
References: <20181117011304.GA47584@begriffs.com>
 <CABSwF4y=-Nh_Jq0_ZGqKA0jcNoH=f7CyqtA8ONJ-Frxg50g-uA@mail.gmail.com>
 <20181117043555.GA52891@begriffs.com>
Message-ID: <20181117170057.66e05faa@simon.vault-423.qualityretro.net>

On Fri, 16 Nov 2018 22:35:55 -0600
Joe Nelson <joe at begriffs.com> wrote:


> My idea was to do the exercises obviously but maybe to try doing the
> implementation ourselves as well, knowing just the background and what
> the standard says. Then compare our implementation to the one listed
> in the book. That would probably help us better appreciate theirs.

Oh my, this is one of the most interesting ideas I've ever heard. I'm
not much of a programmer, and my kids will probably keep me too busy to
really be a huge part of this, but I definitely want to see where it
goes.

From joe at begriffs.com  Sun Nov 18 18:34:09 2018
From: joe at begriffs.com (Joe Nelson)
Date: Sun, 18 Nov 2018 12:34:09 -0600
Subject: Comparing oh to other Unix shells
In-Reply-To: <20181030152111.GA30381@nobelware.com>
References: <20181029171153.GB21577@vm2.eradman.com>
 <20181030002934.GA31915@begriffs.com>
 <20181030152111.GA30381@nobelware.com>
Message-ID: <20181118183409.GE23246@begriffs.com>

> I have communicated with the OpenGroup on a couple of topics and they
> were prompt in getting back to me.

Hmm, they're not getting back to me. I emailed OGPubs at opengroup.org,
waited about two weeks, and sent a follow-up email but nothing.

I did find a PDF online containing IEEE Std 1003.1-2008 (all
four volumes in one file). Given the material, a 2008 version is
probably just fine. Do you know how to turn such a PDF into four
physical volumes at the university print shop, with a cover and
a title on the spine?

From nompelis at nobelware.com  Mon Nov 19 01:33:01 2018
From: nompelis at nobelware.com (Ioannis Nompelis)
Date: Mon, 19 Nov 2018 01:33:01 +0000
Subject: Comparing oh to other Unix shells
In-Reply-To: <20181118183409.GE23246@begriffs.com>
References: <20181029171153.GB21577@vm2.eradman.com>
 <20181030002934.GA31915@begriffs.com> <20181030152111.GA30381@nobelware.com>
 <20181118183409.GE23246@begriffs.com>
Message-ID: <20181119013301.GA17604@nobelware.com>

> 
> > I have communicated with the OpenGroup on a couple of topics and they
> > were prompt in getting back to me.
> 
> Hmm, they're not getting back to me. I emailed OGPubs at opengroup.org,
> waited about two weeks, and sent a follow-up email but nothing.
> 

Will look back in my old emails and will get you an email address to a
real person.


> I did find a PDF online containing IEEE Std 1003.1-2008 (all
> four volumes in one file). Given the material, a 2008 version is
> probably just fine. Do you know how to turn such a PDF into four
> physical volumes at the university print shop, with a cover and
> a title on the spine?

I will inquire. I had done this for my thesis, exactly like that. What
may be a problem is if they ask me if the material is copyrighted, and
turn me away. This is possible, but we will find out.


From nompelis at nobelware.com  Mon Nov 19 14:12:37 2018
From: nompelis at nobelware.com (Ioannis Nompelis)
Date: Mon, 19 Nov 2018 14:12:37 +0000
Subject: C study buddy?
In-Reply-To: <20181117043555.GA52891@begriffs.com>
References: <20181117011304.GA47584@begriffs.com>
 <CABSwF4y=-Nh_Jq0_ZGqKA0jcNoH=f7CyqtA8ONJ-Frxg50g-uA@mail.gmail.com>
 <20181117043555.GA52891@begriffs.com>
Message-ID: <20181119141237.GA13291@nobelware.com>

Happy Monday guys.

This one's for Joe and for his C exploration:
https://twitter.com/unix_byte/status/1064418505179549696


From joe at begriffs.com  Mon Nov 19 23:58:25 2018
From: joe at begriffs.com (Joe Nelson)
Date: Mon, 19 Nov 2018 17:58:25 -0600
Subject: Comparing oh to other Unix shells
In-Reply-To: <20181119013301.GA17604@nobelware.com>
References: <20181029171153.GB21577@vm2.eradman.com>
 <20181030002934.GA31915@begriffs.com>
 <20181030152111.GA30381@nobelware.com>
 <20181118183409.GE23246@begriffs.com>
 <20181119013301.GA17604@nobelware.com>
Message-ID: <20181119235825.GA73123@begriffs.com>

> Will look back in my old emails and will get you an email address to a
> real person.

Thanks!

> I will inquire. I had done this for my thesis, exactly like that. What
> may be a problem is if they ask me if the material is copyrighted, and
> turn me away. This is possible, but we will find out.

Yeah good point. Forget it actually, I don't want to print a pirate
copy. If the Open Group gets back to me then I can buy it from them, or
maybe I can find a used copy for sale. Otherwise they do offer an HTML
version for free download and I can legally use that.

From nompelis at nobelware.com  Tue Nov 20 00:16:34 2018
From: nompelis at nobelware.com (Ioannis Nompelis)
Date: Tue, 20 Nov 2018 00:16:34 +0000
Subject: Comparing oh to other Unix shells
In-Reply-To: <20181119235825.GA73123@begriffs.com>
References: <20181029171153.GB21577@vm2.eradman.com>
 <20181030002934.GA31915@begriffs.com> <20181030152111.GA30381@nobelware.com>
 <20181118183409.GE23246@begriffs.com> <20181119013301.GA17604@nobelware.com>
 <20181119235825.GA73123@begriffs.com>
Message-ID: <20181120001634.GA2895@nobelware.com>

I looked up the copyrights and it is IEEE _and_ the Open Group. Cna you go
search in the IEEE-type online shops? I did not really look, but this was a
quick link: https://www.techstreet.com/ieee/pages/home
Will cost much less than 4 bound, custom books here.

The same page says that "UNIX is a registered trademark of the Open Group"
which is something I did not knnw!
http://pubs.opengroup.org/onlinepubs/9699919799/


From joe at begriffs.com  Tue Nov 20 01:14:22 2018
From: joe at begriffs.com (Joe Nelson)
Date: Mon, 19 Nov 2018 19:14:22 -0600
Subject: Comparing oh to other Unix shells
In-Reply-To: <20181120001634.GA2895@nobelware.com>
References: <20181029171153.GB21577@vm2.eradman.com>
 <20181030002934.GA31915@begriffs.com>
 <20181030152111.GA30381@nobelware.com>
 <20181118183409.GE23246@begriffs.com>
 <20181119013301.GA17604@nobelware.com>
 <20181119235825.GA73123@begriffs.com>
 <20181120001634.GA2895@nobelware.com>
Message-ID: <20181120011422.GA81032@begriffs.com>

> I looked up the copyrights and it is IEEE _and_ the Open Group. Cna you go
> search in the IEEE-type online shops?

https://www.techstreet.com/ieee/standards/ieee-1003-1-2016-edition?product_id=1929761
$1070.00 for the print copy -- yeah I don't think so!

From dave.bucklin at gmail.com  Tue Nov 20 02:46:02 2018
From: dave.bucklin at gmail.com (Dave Bucklin)
Date: Mon, 19 Nov 2018 20:46:02 -0600
Subject: Comparing oh to other Unix shells
In-Reply-To: <20181120011422.GA81032@begriffs.com>
References: <20181029171153.GB21577@vm2.eradman.com>
 <20181030002934.GA31915@begriffs.com>
 <20181030152111.GA30381@nobelware.com>
 <20181118183409.GE23246@begriffs.com>
 <20181119013301.GA17604@nobelware.com>
 <20181119235825.GA73123@begriffs.com>
 <20181120001634.GA2895@nobelware.com>
 <20181120011422.GA81032@begriffs.com>
Message-ID: <20181120024602.bzuxywqywwqprbro@19a6.tech>

On Mon, Nov 19, 2018 at 07:14:22PM -0600, Joe Nelson wrote:
> > I looked up the copyrights and it is IEEE _and_ the Open Group. Cna you go
> > search in the IEEE-type online shops?
> 
> https://www.techstreet.com/ieee/standards/ieee-1003-1-2016-edition?product_id=1929761
> $1070.00 for the print copy -- yeah I don't think so!

They have a black friday deal: 5 for $5350.00.

From chris at sencjw.com  Tue Nov 20 04:46:10 2018
From: chris at sencjw.com (Chris Wilson)
Date: Mon, 19 Nov 2018 22:46:10 -0600
Subject: New tech blog
Message-ID: <20181120044610.GA30065@tha-tha.local>

I've started a new tech blog/dumping ground for mostly tech and ham
radio things. If that's the sort of thing that you'd be interested in,
check it out:

https://kd9kjv.com 

From joe at begriffs.com  Tue Nov 20 05:56:26 2018
From: joe at begriffs.com (Joe Nelson)
Date: Mon, 19 Nov 2018 23:56:26 -0600
Subject: C study buddy?
In-Reply-To: <20181117170057.66e05faa@simon.vault-423.qualityretro.net>
References: <20181117011304.GA47584@begriffs.com>
 <CABSwF4y=-Nh_Jq0_ZGqKA0jcNoH=f7CyqtA8ONJ-Frxg50g-uA@mail.gmail.com>
 <20181117043555.GA52891@begriffs.com>
 <20181117170057.66e05faa@simon.vault-423.qualityretro.net>
Message-ID: <20181120055626.GA85530@begriffs.com>

Robbie Herb wrote:
> Oh my, this is one of the most interesting ideas I've ever heard. ...
> I definitely want to see where it goes.

Here's what I've learned so far:

* The idea of "benign" macro redefinition and un-definition.
* <assert.h> is designed to work when included multiple times in a
  single file.  Doing so with our without NDEBUG defined changes the
  behavior of the assert() macro.
* My first thought of using an if statement in the macro is no good
  because it needs to evaluate to a void expression so that it asserts can
  be made anywhere in the code.
* Macros in standard library header files are not allowed to call
  functions from other headers. The headers themselves may not include
  each other.
* There's a trick to adding the line number in a string built entirely
  within the macro.
  https://github.com/begriffs/libc/blob/master/assert.h#L12-L14
* <ctype.h> makes macro overrides of its functions. This way the
  programmer can get the speed of a macro but have access to a function
  if needed for function pointers.
* If foo is a function and covered up with a macro of the same name,
  you can still get at the function by enclosing it in parens (foo)(x).
* ctype's implementation must make non-portable assumptions in its
  lookup tables for a particular platform, but the #error directive
  allows you to break the compilation if expectations are violated.
  https://github.com/begriffs/libc/blob/master/ctype.c#L6-L8
* Cool trick of offsetting the lookup table pointer by one on an
  underlying array so that -1 (EOF) can be looked up too.
  https://github.com/begriffs/libc/blob/master/ctype.c#L79
* Looping over a raw string literal is fine, it just gets stored
  in the data segment of the program. Pretty convenient.
  https://github.com/begriffs/libc/blob/master/tctype.c#L32

I would love someone to work on this with me. The exercises would be
more fun that way. It's a pretty great book, I think even you C pros
like Sam and Ioannis might get something out of it.

Also, anyone know how to improve the Makefile while still keeping within
the fully portable subset of make commands? It seems redundant in
places. https://github.com/begriffs/libc/blob/master/Makefile Also the
libc.a file will get rebuilt if any object file changes (which is good),
which will cause *all* the test binaries to become out of date (which
may be bad). My BSD make doesn't support the "library.a(object.o)"
construction with the parens to indicate a target's reliance on just one
part of a library archive.

From joe at begriffs.com  Tue Nov 20 06:07:31 2018
From: joe at begriffs.com (Joe Nelson)
Date: Tue, 20 Nov 2018 00:07:31 -0600
Subject: New tech blog
In-Reply-To: <20181120044610.GA30065@tha-tha.local>
References: <20181120044610.GA30065@tha-tha.local>
Message-ID: <20181120060731.GB85530@begriffs.com>

> https://kd9kjv.com

That's superb writing and funny! Added it to my RSS reader and looking
forward to the next article.

Also hats off for learning Morse. I hit up https://lcwo.net for a while
and it frustrated the everloving hell out of me. :)


PS. Mutt chose a Message-Id ending in tha-tha.local for your message.
If you `set hostname = "sencjw.com"` in muttrc then it'll use that
domain rather than your computer name.

From nompelis at nobelware.com  Tue Nov 20 16:58:47 2018
From: nompelis at nobelware.com (Ioannis Nompelis)
Date: Tue, 20 Nov 2018 16:58:47 +0000
Subject: New tech blog
In-Reply-To: <20181120044610.GA30065@tha-tha.local>
References: <20181120044610.GA30065@tha-tha.local>
Message-ID: <20181120165847.GA8609@nobelware.com>

> 
> https://kd9kjv.com 
> 

"Found a new thingy out in space? You can bet your bitcoins it?s still being
a lawful thermodynamic citizen."

Absolutely poetic!

I like point 5 of hte summary. Sounds like several of us here sort of live
that part in real life.


I will hack together a page with all of the links to personal blogs, feeds
and webpages, with the intention to put that page on frostbyte.cc, primarily
as a "go to" or "index" page for us.


From nompelis at nobelware.com  Tue Nov 20 17:14:04 2018
From: nompelis at nobelware.com (Ioannis Nompelis)
Date: Tue, 20 Nov 2018 17:14:04 +0000
Subject: C study buddy?
In-Reply-To: <20181120055626.GA85530@begriffs.com>
References: <20181117011304.GA47584@begriffs.com>
 <CABSwF4y=-Nh_Jq0_ZGqKA0jcNoH=f7CyqtA8ONJ-Frxg50g-uA@mail.gmail.com>
 <20181117043555.GA52891@begriffs.com>
 <20181117170057.66e05faa@simon.vault-423.qualityretro.net>
 <20181120055626.GA85530@begriffs.com>
Message-ID: <20181120171404.GB8609@nobelware.com>

> * There's a trick to adding the line number in a string built entirely
>   within the macro.
>   https://github.com/begriffs/libc/blob/master/assert.h#L12-L14

Way cool. Seen this before. Never used it.


> * <ctype.h> makes macro overrides of its functions. This way the
>   programmer can get the speed of a macro but have access to a function
>   if needed for function pointers.
> * If foo is a function and covered up with a macro of the same name,
>   you can still get at the function by enclosing it in parens (foo)(x).

Did not know!

I wish I had the time to dig in there with you, Joe.


From chris at sencjw.com  Fri Nov 23 22:48:10 2018
From: chris at sencjw.com (Chris Wilson)
Date: Fri, 23 Nov 2018 16:48:10 -0600
Subject: New tech blog
In-Reply-To: <20181120060731.GB85530@begriffs.com>
References: <20181120044610.GA30065@tha-tha.local>
 <20181120060731.GB85530@begriffs.com>
Message-ID: <20181123224810.GA65361@sencjw.com>

Whoops, sorry Joe... I forgot to reply to the list ;)

On Tue, Nov 20, 2018 at 12:07:31AM -0600, Joe Nelson wrote:
> > https://kd9kjv.com
> 
> That's superb writing and funny! Added it to my RSS reader and looking
> forward to the next article.

D'aww thanks! I'll try to keep the good stuff coming. I'm glad to be
able to write about tech stuff that's completely unrelated to anything
at work.

> Also hats off for learning Morse. I hit up https://lcwo.net for a while
> and it frustrated the everloving hell out of me. :)

I have an iPhone app that seems to be working okay for me. It's *just*
gamified enough it seems. For me, there's also the meta-learning of
successfully doing daily habits; something that I'm always trying to get
better at. That being said, I've just crossed 90% for "K" & "M" so the
Koch method says I can now add another letter, "R". So it is early days
and I'll see if I wash out later on (hoping not).

> PS. Mutt chose a Message-Id ending in tha-tha.local for your message.
> If you `set hostname = "sencjw.com"` in muttrc then it'll use that
> domain rather than your computer name.

Thanks for the tip. I'll set it.

--
Chris

From louis at goessling.com  Fri Nov 23 23:03:51 2018
From: louis at goessling.com (Louis)
Date: Fri, 23 Nov 2018 17:03:51 -0600
Subject: Howdy
Message-ID: <CAL-xF7Ui7gv75Q+T=A9XkiKE8zLH4+UQfsCbvgas9y+Z5Boayw@mail.gmail.com>

Hello folks,

I came across TC Hardcore Hackers on Ioannis' GitHub profile, who I've met
briefly offline. I thought I'd join the mailing list and say hi!

Name: Louis Goessling

"Work": Student at the University of Minnesota Twin Cities, Systems Admin for
  the ACM Student Chapter at UMTC.

Interests: Systems software & languages. I have a toy C-like programming
  language "Orth" that I've used to build some projects in this realm:
  self-hosting compiler (uses LLVM as a backend) and a very primitive x86 OS.

Analog interests: Metalworking, Sailing, [Ultimate] Frisbee.

Systems: I run Debian on my laptop, and on my servers. One of these is my home
  router and one is racked at ACM. Theres a collection of servers I administrate
  at ACM that run Debian and Arch. We use a linux box as the bridge/router
  network uplink at ACM, too.


I occasionally attend the PyMNToS (Python UG) meetup, and went to the most
recent Rust meetup (sadly not called a RUG) although I don't know much rust...
I'm new to the mailing list scene but this sounds like an interesting group!

You can pull my gpg key with this email or find it at
https://louis.goessling.com/key.asc

Louis Goessling

From chris at sencjw.com  Fri Nov 23 23:22:57 2018
From: chris at sencjw.com (Chris Wilson)
Date: Fri, 23 Nov 2018 17:22:57 -0600
Subject: Howdy
In-Reply-To: <CAL-xF7Ui7gv75Q+T=A9XkiKE8zLH4+UQfsCbvgas9y+Z5Boayw@mail.gmail.com>
References: <CAL-xF7Ui7gv75Q+T=A9XkiKE8zLH4+UQfsCbvgas9y+Z5Boayw@mail.gmail.com>
Message-ID: <20181123232257.GB65602@sencjw.com>

On Fri, Nov 23, 2018 at 05:03:51PM -0600, Louis wrote:
> [...]
> Analog interests: Metalworking, Sailing, [Ultimate] Frisbee.

Oh cool, I'm a sailor myself. What sort of boat do you use?

--
Chris

From louis at goessling.com  Fri Nov 23 23:34:02 2018
From: louis at goessling.com (Louis)
Date: Fri, 23 Nov 2018 17:34:02 -0600
Subject: Howdy
In-Reply-To: <20181123232257.GB65602@sencjw.com>
References: <CAL-xF7Ui7gv75Q+T=A9XkiKE8zLH4+UQfsCbvgas9y+Z5Boayw@mail.gmail.com>
 <20181123232257.GB65602@sencjw.com>
Message-ID: <CAL-xF7UTC4RHEVndPt_XAQE4Y0W1NENWsPLoxxJmrVbPV8etAg@mail.gmail.com>

On Fri, Nov 23, 2018 at 5:23 PM Chris Wilson <chris at sencjw.com> wrote:

> Oh cool, I'm a sailor myself. What sort of boat do you use?

I used to do a lot more sailing a couple years ago - Sunfish and C Scows
mostly. I've done some messing around in Lasers and an Opti too. It's a lot
harder to find time (and a boat...) these days though :(

 - Louis

From chris at sencjw.com  Sat Nov 24 00:23:25 2018
From: chris at sencjw.com (Chris Wilson)
Date: Fri, 23 Nov 2018 18:23:25 -0600
Subject: Howdy
In-Reply-To: <CAL-xF7UTC4RHEVndPt_XAQE4Y0W1NENWsPLoxxJmrVbPV8etAg@mail.gmail.com>
References: <CAL-xF7Ui7gv75Q+T=A9XkiKE8zLH4+UQfsCbvgas9y+Z5Boayw@mail.gmail.com>
 <20181123232257.GB65602@sencjw.com>
 <CAL-xF7UTC4RHEVndPt_XAQE4Y0W1NENWsPLoxxJmrVbPV8etAg@mail.gmail.com>
Message-ID: <20181124002325.GC65602@sencjw.com>

On Fri, Nov 23, 2018 at 05:34:02PM -0600, Louis wrote:
> It's a lot harder to find time (and a boat...) these days though :(

That's so true! Especially with the long winters around here (I'm in
Wisconsin).

Anyway, welcome!

--
Chris

From nompelis at nobelware.com  Sat Nov 24 16:39:21 2018
From: nompelis at nobelware.com (Ioannis Nompelis)
Date: Sat, 24 Nov 2018 16:39:21 +0000
Subject: Howdy
In-Reply-To: <20181124002325.GC65602@sencjw.com>
References: <CAL-xF7Ui7gv75Q+T=A9XkiKE8zLH4+UQfsCbvgas9y+Z5Boayw@mail.gmail.com>
 <20181123232257.GB65602@sencjw.com>
 <CAL-xF7UTC4RHEVndPt_XAQE4Y0W1NENWsPLoxxJmrVbPV8etAg@mail.gmail.com>
 <20181124002325.GC65602@sencjw.com>
Message-ID: <20181124163921.GA23781@nobelware.com>

Welcome Louis! I knew you would find your way to the Hardcore Hackers, and
that is why I did not just mention it to you. I have met Louis on a couple of
occasions, and I play/host trivia with Louis' dad.

We have high expectations of Louis... (no pressure dude). I will expose the
details; he just finished high-school and had been taking UofM college credit
courses while in high-school. He is the only high-schooler to whom I had
recommended a book by Niklaus Wirth (the very classic one "Algo & Data...").
I was impressed to hear of him making a language/compiler and an OS. I am sure
we all have lots to learn from Louis' fresh eyes on things and his enthusiasm.

Louis, pick a username (login) for our VPS so that Dave or Joe can get you
an account. It is BSD, so you will learn a bit of that too (a good thing).

This list is archived online on frostbyte.cc, all of what we talk about here.
We also are running an IRC server and a Murmur voice-chat server, for the
yet-to-come occasion that we will do paired- or group-programming.

Our members write weblogs, which are fun to read. We each have projects that
we share and discuss, and some of us go to great lengths both in understanding
and execution, but also in articulating opinions; the archives can attest to
that! I am sure you and Sam will find CS and programmatic topics to discuss.
IN


From joe at begriffs.com  Sat Nov 24 16:42:38 2018
From: joe at begriffs.com (Joe Nelson)
Date: Sat, 24 Nov 2018 10:42:38 -0600
Subject: Howdy
In-Reply-To: <CAL-xF7Ui7gv75Q+T=A9XkiKE8zLH4+UQfsCbvgas9y+Z5Boayw@mail.gmail.com>
References: <CAL-xF7Ui7gv75Q+T=A9XkiKE8zLH4+UQfsCbvgas9y+Z5Boayw@mail.gmail.com>
Message-ID: <20181124164238.GB37236@begriffs.com>

> I came across TC Hardcore Hackers on Ioannis' GitHub profile, who I've met
> briefly offline. I thought I'd join the mailing list and say hi!

Hi Louis, welcome! Really glad you found the list. Your webpage has many
interesting projects on it.

> Interests: Systems software & languages.

Nice. Trying to get more into this myself. Currently halfway through
P.J. Plauger's book about the C standard library. After that I'll
be trying the examples in Stevens' "Advanced Programming in the UNIX
Environment."  If you're interested we could try working on these
examples together on the frostbyte.cc server. You're probably busy with
school, but just throwing it out there.

> Analog interests: Metalworking, Sailing, [Ultimate] Frisbee.

Have you visited the new metal shop at TC Maker? http://www.tcmaker.org
They've got all kinds of tools in there, and run classes about how to
use them.

> Systems: I run Debian on my laptop, and on my servers. One of these is my home
>   router and one is racked at ACM. Theres a collection of servers I administrate
>   at ACM that run Debian and Arch. We use a linux box as the bridge/router
>   network uplink at ACM, too.

I want to set up a proper network at home (rather than using whatever
weak wireless router the ISP gave me). What would you advise? Here's the
tentative plan so far:

* Get an EdgeRouter 4 to act as a switch and router
  https://www.ubnt.com/edgemax/edgerouter-4/
* Use a dedicated wireless access point
  https://www.ubnt.com/unifi/unifi-ap-ac-pro/
* Someone online said that they add pfSense as the WAN entry point,
  doing the NAT, content filtering and firewalling.
  [WAN] --> Modem --> pfSense --> ER X --> [LAN]
  I was considering running pfSense on an APU.2C4
  http://www.mini-box.com/ALIX-APU-2C4-AMD-G-Series-GX-412TC
* I'd like to put a rack in the basement to hold this stuff. Are there
  local places to get a rack for cheap?
* What's a good rackable NAS? Synology?

Maybe all this is way more expensive than it needs to be though, and I
could be using more off-the-shelf components. Also I want to keep this
setup quiet, and not have a stack of jet engines in the basement. :)

From salo at saloits.com  Sat Nov 24 17:50:40 2018
From: salo at saloits.com (Timothy J. Salo)
Date: Sat, 24 Nov 2018 11:50:40 -0600
Subject: Howdy
In-Reply-To: <20181124163921.GA23781@nobelware.com>
References: <CAL-xF7Ui7gv75Q+T=A9XkiKE8zLH4+UQfsCbvgas9y+Z5Boayw@mail.gmail.com>
 <20181123232257.GB65602@sencjw.com>
 <CAL-xF7UTC4RHEVndPt_XAQE4Y0W1NENWsPLoxxJmrVbPV8etAg@mail.gmail.com>
 <20181124002325.GC65602@sencjw.com> <20181124163921.GA23781@nobelware.com>
Message-ID: <11823783-a393-cfc2-3ced-5b4339702ca6@saloits.com>

On 11/24/2018 10:39 AM, Ioannis Nompelis wrote:
> ... he just finished high-school and had been taking UofM college credit
> courses while in high-school.

He sounds like, but probably isn't, the PSEO student I ran into at the
campus Starbucks who is taking math and computer sciences courses.  So,
perhaps there is at least one more PSEO student who might be interested.

-tjs

From louis at goessling.com  Sat Nov 24 18:44:34 2018
From: louis at goessling.com (Louis)
Date: Sat, 24 Nov 2018 12:44:34 -0600
Subject: Howdy
In-Reply-To: <11823783-a393-cfc2-3ced-5b4339702ca6@saloits.com>
References: <CAL-xF7Ui7gv75Q+T=A9XkiKE8zLH4+UQfsCbvgas9y+Z5Boayw@mail.gmail.com>
 <20181123232257.GB65602@sencjw.com>
 <CAL-xF7UTC4RHEVndPt_XAQE4Y0W1NENWsPLoxxJmrVbPV8etAg@mail.gmail.com>
 <20181124002325.GC65602@sencjw.com> <20181124163921.GA23781@nobelware.com>
 <11823783-a393-cfc2-3ced-5b4339702ca6@saloits.com>
Message-ID: <CAL-xF7Wv4oF=QTwpwYqA08egzbgP3YwdkRCYdjVjRxcPX73JYg@mail.gmail.com>

On Sat, Nov 24, 2018 at 11:50 AM Timothy J. Salo <salo at saloits.com> wrote:
> He sounds like, but probably isn't, the PSEO student I ran into at the
> campus Starbucks who is taking math and computer sciences courses.  So,
> perhaps there is at least one more PSEO student who might be interested.

I don't think I've ever been to the campus starbucks so I doubt it was
me - there are dozens of us! Dozens!

From louis at goessling.com  Sat Nov 24 19:01:22 2018
From: louis at goessling.com (Louis)
Date: Sat, 24 Nov 2018 13:01:22 -0600
Subject: Fwd: Howdy
In-Reply-To: <CAL-xF7Vh3VqG34NHxQkxZsSHUjCnkvuqo1Qmu-aFRKCDS7n_hQ@mail.gmail.com>
References: <CAL-xF7Ui7gv75Q+T=A9XkiKE8zLH4+UQfsCbvgas9y+Z5Boayw@mail.gmail.com>
 <20181124023816.qx6qiy5n6iz5pj77@19a6.tech>
 <CAL-xF7Vh3VqG34NHxQkxZsSHUjCnkvuqo1Qmu-aFRKCDS7n_hQ@mail.gmail.com>
Message-ID: <CAL-xF7U95kJkf-gfdNFkZYHQqPw8OcYT+Rb2+eths1OwEnyKvQ@mail.gmail.com>

On Fri, Nov 23, 2018 at 8:31 PM Dave Bucklin <dave.bucklin at gmail.com> wrote:
> Louis, if you would like, I can set you up with an account at
> frostbyte.cc using your gpg key. All I need is your desired username.

I'd be happy to have an account, though I don't know how much I'll use
it. It'll be interesting to poke around on a BSD box. The only
experience I've had with BSD was the rather unpleasant experience of
trying to keep alive the previous ACM router (set up by someone who
graduated years before I arrived) alive until it was replaced.

Is this server a real box somewhere or in the cloud?

I haven't set up a gpg auth subkey though, so I'd prefer if you added
my SSH key (at https://louis.members.acm.umn.edu/~louis/id_rsa.pub .)

(Committed the cardinal sin and didn't cc the list the first time I sent this.)

From louis at goessling.com  Sat Nov 24 19:44:13 2018
From: louis at goessling.com (Louis)
Date: Sat, 24 Nov 2018 13:44:13 -0600
Subject: Systems, Networking &c
In-Reply-To: <20181124164238.GB37236@begriffs.com>
References: <CAL-xF7Ui7gv75Q+T=A9XkiKE8zLH4+UQfsCbvgas9y+Z5Boayw@mail.gmail.com>
 <20181124164238.GB37236@begriffs.com>
Message-ID: <CAL-xF7X3sY1tzyGGhg-X2RnO5LzkMPPkUezmfJwYKE_E4C8+wg@mail.gmail.com>

On Sat, Nov 24, 2018 at 10:42 AM Joe Nelson <joe at begriffs.com> wrote:
> Nice. Trying to get more into this myself. Currently halfway through
> P.J. Plauger's book about the C standard library. After that I'll
> be trying the examples in Stevens' "Advanced Programming in the UNIX

I just finished implementing malloc for one of the classes I've taken
(CSCI 2021 - Machine Architecture and Organization.) It was a very
interesting learning experience, and ended up being way harder than I
expected to get something that is {correct, fast, efficient}.

> Environment."  If you're interested we could try working on these
> examples together on the frostbyte.cc server. You're probably busy with
> school, but just throwing it out there.

That might be interesting, though I am pretty busy these days as we
approach finals.

> Have you visited the new metal shop at TC Maker? http://www.tcmaker.org
> They've got all kinds of tools in there, and run classes about how to
> use them.

I don't think I've ever been to the Hack Factory - thanks for linking
that. I've been meaning to learn how to weld for a while. Most of my
experimenting with metal has been casting small things in a DIY
aluminum foundry.

> * Get an EdgeRouter 4 to act as a switch and router
>   https://www.ubnt.com/edgemax/edgerouter-4/

I've seen those before, and they look pretty nice. That being said,
I've never worked with one so I don't know the low down. Both of the
routers I administrate are just regular linux boxes that run shorewall
< http://shorewall.org/ > (which I think is a lot like pfSense, but
linux based instead of BSD and a package instead of a distro) and
dnsmasq (which is a DHCP server and DNS relay.) I've had a pretty good
experience working with that, although the flexibility of shorewall
means configuring it the first time can be something of a nightmare.

> * Use a dedicated wireless access point
>   https://www.ubnt.com/unifi/unifi-ap-ac-pro/

I'm a total cheapskate, so my home network APs are just my old routers
in AP mode... Those look real nice though!

> * Someone online said that they add pfSense as the WAN entry point,
>   doing the NAT, content filtering and firewalling.
>   [WAN] --> Modem --> pfSense --> ER X --> [LAN]

That seems... odd to me - aren't pfSense boxes and an EdgeRouter both
intended to be used as the router/gateway in a network like that?
Seems likely to me that you could use just one of those and skip the
other box (+ complexity of double-NAT or using pfSense as a bridge.)

> * I'd like to put a rack in the basement to hold this stuff. Are there
>   local places to get a rack for cheap?

I'd look on craigslist, which is where I've bought most of my
hardware. There's a bunch of listings for old server racks and stuff
on there, e.g. <
https://minneapolis.craigslist.org/hnp/sop/d/amco-server-rack/6744117725.html
>. Watch out though, because a lot of people will list A/V racks that
are not deep enough for regular servers on there. I'm sure you could
find smaller ones too, although they are usually more expensive (since
they aren't such a pain to move :P).

> * What's a good rackable NAS? Synology?

I've heard good things about those too, but never used one. My
fileserver is a PowerEdge 2950 with a bunch of SAS drives I found on
(suprise!) craigslist. Lots of good options on there, although I
wouldn't put used drives in anything less reliable than RAID 1.

> Maybe all this is way more expensive than it needs to be though, and I
> could be using more off-the-shelf components. Also I want to keep this
> setup quiet, and not have a stack of jet engines in the basement. :)

While my craigslist-sourced rackmount gear was cheap, it certainly is
loud! The other advantage of something like an EdgeRouter is it will
probably be orders of magnitude better on the power consumption front.

From nompelis at nobelware.com  Sat Nov 24 20:15:01 2018
From: nompelis at nobelware.com (Ioannis Nompelis)
Date: Sat, 24 Nov 2018 20:15:01 +0000
Subject: Fwd: Howdy
In-Reply-To: <CAL-xF7U95kJkf-gfdNFkZYHQqPw8OcYT+Rb2+eths1OwEnyKvQ@mail.gmail.com>
References: <CAL-xF7Ui7gv75Q+T=A9XkiKE8zLH4+UQfsCbvgas9y+Z5Boayw@mail.gmail.com>
 <20181124023816.qx6qiy5n6iz5pj77@19a6.tech>
 <CAL-xF7Vh3VqG34NHxQkxZsSHUjCnkvuqo1Qmu-aFRKCDS7n_hQ@mail.gmail.com>
 <CAL-xF7U95kJkf-gfdNFkZYHQqPw8OcYT+Rb2+eths1OwEnyKvQ@mail.gmail.com>
Message-ID: <20181124201501.GA32357@nobelware.com>

It is a virtual Private Server (VPS), so not "bare metal" by definition. You
do not have to do much there, but it is good to have access for when we do
stuff, or when we share stuff.

SSH (public) key is all that is needed. But also provide a username.

And there seem to be dozens of Starbucks on campus as well nowadays!


From louis at goessling.com  Sat Nov 24 20:18:13 2018
From: louis at goessling.com (Louis)
Date: Sat, 24 Nov 2018 14:18:13 -0600
Subject: Fwd: Howdy
In-Reply-To: <20181124201501.GA32357@nobelware.com>
References: <CAL-xF7Ui7gv75Q+T=A9XkiKE8zLH4+UQfsCbvgas9y+Z5Boayw@mail.gmail.com>
 <20181124023816.qx6qiy5n6iz5pj77@19a6.tech>
 <CAL-xF7Vh3VqG34NHxQkxZsSHUjCnkvuqo1Qmu-aFRKCDS7n_hQ@mail.gmail.com>
 <CAL-xF7U95kJkf-gfdNFkZYHQqPw8OcYT+Rb2+eths1OwEnyKvQ@mail.gmail.com>
 <20181124201501.GA32357@nobelware.com>
Message-ID: <CAL-xF7WmaGjtv0CLV1jk4bMdEAM_2k=Kgczb+kjNiyd9_tyW=A@mail.gmail.com>

Whoops, forgot a username. I'll take `louis` if I can get it. I linked
my SSH pubkey above, here it is again:
https://louis.members.acm.umn.edu/~louis/id_rsa.pub

From nompelis at nobelware.com  Sat Nov 24 20:24:21 2018
From: nompelis at nobelware.com (Ioannis Nompelis)
Date: Sat, 24 Nov 2018 20:24:21 +0000
Subject: Systems, Networking &c
In-Reply-To: <CAL-xF7X3sY1tzyGGhg-X2RnO5LzkMPPkUezmfJwYKE_E4C8+wg@mail.gmail.com>
References: <CAL-xF7Ui7gv75Q+T=A9XkiKE8zLH4+UQfsCbvgas9y+Z5Boayw@mail.gmail.com>
 <20181124164238.GB37236@begriffs.com>
 <CAL-xF7X3sY1tzyGGhg-X2RnO5LzkMPPkUezmfJwYKE_E4C8+wg@mail.gmail.com>
Message-ID: <20181124202421.GB32357@nobelware.com>

Louis, please point us to your malloc()/free()/calloc()/realloc() implementation.
I'd like to take a look, if you do not mind.

As for home networking and hardware, I'd ping my friend Randy, who has had lots
of experience in setting up a variety of hardware for this purpose. He stands
by the Ubiquiti EdgeRouter, and he says it is very much what an "enthusiast"
like you guys would want. He had a detailed post o TC-LUG, so you can look in
those archives from a couple of months ago. Randy also has racks that he may
want to get rid of; he offered me a few pieces of hardware, which was both rack
space and 1U,2U and 4U boxes, both with and without hardware.

I also use RAID1 and no less for anything serious when it comes to storage.
I take it a step further: RAID1, with LUKS encryption containers, with XFS for
the filesystem. There are NAS storage devices that use ZFS, and if you are
comfortable with that, you want that (ZFS is great). ZFS is standard in BSD,
but a compileable module for Linux that is not part of the Linux kernel due to
licensing/copyrights.


From joe at begriffs.com  Sat Nov 24 20:32:08 2018
From: joe at begriffs.com (Joe Nelson)
Date: Sat, 24 Nov 2018 14:32:08 -0600
Subject: Fwd: Howdy
In-Reply-To: <CAL-xF7U95kJkf-gfdNFkZYHQqPw8OcYT+Rb2+eths1OwEnyKvQ@mail.gmail.com>
References: <CAL-xF7Ui7gv75Q+T=A9XkiKE8zLH4+UQfsCbvgas9y+Z5Boayw@mail.gmail.com>
 <20181124023816.qx6qiy5n6iz5pj77@19a6.tech>
 <CAL-xF7Vh3VqG34NHxQkxZsSHUjCnkvuqo1Qmu-aFRKCDS7n_hQ@mail.gmail.com>
 <CAL-xF7U95kJkf-gfdNFkZYHQqPw8OcYT+Rb2+eths1OwEnyKvQ@mail.gmail.com>
Message-ID: <20181124203208.GC37236@begriffs.com>

> I haven't set up a gpg auth subkey though, so I'd prefer if you added
> my SSH key (at https://louis.members.acm.umn.edu/~louis/id_rsa.pub .)

OK, you should be set up. Username 602p.

From louis at goessling.com  Sat Nov 24 21:10:55 2018
From: louis at goessling.com (Louis)
Date: Sat, 24 Nov 2018 15:10:55 -0600
Subject: Systems, Networking &c
In-Reply-To: <20181124202421.GB32357@nobelware.com>
References: <CAL-xF7Ui7gv75Q+T=A9XkiKE8zLH4+UQfsCbvgas9y+Z5Boayw@mail.gmail.com>
 <20181124164238.GB37236@begriffs.com>
 <CAL-xF7X3sY1tzyGGhg-X2RnO5LzkMPPkUezmfJwYKE_E4C8+wg@mail.gmail.com>
 <20181124202421.GB32357@nobelware.com>
Message-ID: <CAL-xF7WKStJx13ReNXqwCqY8d=nxByNfQ3DTKEZcmcTjz3s9pA@mail.gmail.com>

On Sat, Nov 24, 2018 at 2:24 PM Ioannis Nompelis <nompelis at nobelware.com> wrote:
> Louis, please point us to your malloc()/free()/calloc()/realloc() implementation.
> I'd like to take a look, if you do not mind.

I've put a copy at https://louis.members.acm.umn.edu/~louis/mm.c . Two caveats:
 - It's not going to work out-of-the-box as a malloc() replacement,
since it's meant to hook into the test suite for the class. I don't
think I'm supposed to distribute that, but if you happened to find a
copy at http://www-users.cselabs.umn.edu/classes/Fall-2018/csci2021-010/ha/4/ha4-handout.tar
it would work fine.
 - calloc() isn't implemented, but it could be done in terms of the
malloc() already implemented. An optimized version should probably use
mmap() to get something mapped to a zero page that will be backed by
real memory when written to, though.

From louis at goessling.com  Sat Nov 24 21:12:40 2018
From: louis at goessling.com (Louis)
Date: Sat, 24 Nov 2018 15:12:40 -0600
Subject: Fwd: Howdy
In-Reply-To: <20181124203208.GC37236@begriffs.com>
References: <CAL-xF7Ui7gv75Q+T=A9XkiKE8zLH4+UQfsCbvgas9y+Z5Boayw@mail.gmail.com>
 <20181124023816.qx6qiy5n6iz5pj77@19a6.tech>
 <CAL-xF7Vh3VqG34NHxQkxZsSHUjCnkvuqo1Qmu-aFRKCDS7n_hQ@mail.gmail.com>
 <CAL-xF7U95kJkf-gfdNFkZYHQqPw8OcYT+Rb2+eths1OwEnyKvQ@mail.gmail.com>
 <20181124203208.GC37236@begriffs.com>
Message-ID: <CAL-xF7WH+O96ZSf_ymHiF4zWGb4D8vg_Ufa8fv-yXKvteS6Tsg@mail.gmail.com>

On Sat, Nov 24, 2018 at 2:32 PM Joe Nelson <joe at begriffs.com> wrote:
> OK, you should be set up. Username 602p.

That works perfectly, thanks. Jarring to be on a system without bash!

From hello at robertdherb.com  Sat Nov 24 21:30:26 2018
From: hello at robertdherb.com (Robbie Herb)
Date: Sat, 24 Nov 2018 15:30:26 -0600
Subject: Howdy (Ubiquiti)
In-Reply-To: <20181124164238.GB37236@begriffs.com>
References: <CAL-xF7Ui7gv75Q+T=A9XkiKE8zLH4+UQfsCbvgas9y+Z5Boayw@mail.gmail.com>
 <20181124164238.GB37236@begriffs.com>
Message-ID: <20181124153026.7ca18e08@simon.vault-423.qualityretro.net>

On Sat, 24 Nov 2018 10:42:38 -0600
Joe Nelson <joe at begriffs.com> wrote:

> I want to set up a proper network at home (rather than using whatever
> weak wireless router the ISP gave me). What would you advise? Here's
> the tentative plan so far:
> 
> * Get an EdgeRouter 4 to act as a switch and router
>   https://www.ubnt.com/edgemax/edgerouter-4/
> * Use a dedicated wireless access point
>   https://www.ubnt.com/unifi/unifi-ap-ac-pro/
> * Someone online said that they add pfSense as the WAN entry point,
>   doing the NAT, content filtering and firewalling.
>   [WAN] --> Modem --> pfSense --> ER X --> [LAN]
>   I was considering running pfSense on an APU.2C4
>   http://www.mini-box.com/ALIX-APU-2C4-AMD-G-Series-GX-412TC
> * I'd like to put a rack in the basement to hold this stuff. Are there
>   local places to get a rack for cheap?
> * What's a good rackable NAS? Synology?
> 
> Maybe all this is way more expensive than it needs to be though, and I
> could be using more off-the-shelf components. Also I want to keep this
> setup quiet, and not have a stack of jet engines in the basement. :)

I've had some experience with Ubiquiti gear and I have to say, it's
pretty nice. Much better than the junk you can get at Best Buy. We
actually run some at a temporary warehouse we set up and it works for
that, and a friend of mine at the local ISP has installed Ubiquiti in a
few of the local frat houses. They like it a lot for the price.

I was planning on next year getting some gear for my house, since I'm
about fed up with the cheap D-link I have (Though you really can't beat
the price!)

Let me know if you have questions. It's been a while since I set it up
but I'm sure I can dust off the cobwebs.


From salo at saloits.com  Sat Nov 24 23:57:11 2018
From: salo at saloits.com (Timothy J. Salo)
Date: Sat, 24 Nov 2018 17:57:11 -0600
Subject: Fwd: Howdy
In-Reply-To: <20181124201501.GA32357@nobelware.com>
References: <CAL-xF7Ui7gv75Q+T=A9XkiKE8zLH4+UQfsCbvgas9y+Z5Boayw@mail.gmail.com>
 <20181124023816.qx6qiy5n6iz5pj77@19a6.tech>
 <CAL-xF7Vh3VqG34NHxQkxZsSHUjCnkvuqo1Qmu-aFRKCDS7n_hQ@mail.gmail.com>
 <CAL-xF7U95kJkf-gfdNFkZYHQqPw8OcYT+Rb2+eths1OwEnyKvQ@mail.gmail.com>
 <20181124201501.GA32357@nobelware.com>
Message-ID: <e6af212c-1ff4-5833-53ad-b36c52c62504@saloits.com>

> And there seem to be dozens of Starbucks on campus as well nowadays!

As far as I know, only is regularly open until 11:00 p.m.

-tjs


From hello at roberthderb.com  Wed Nov 14 03:26:07 2018
From: hello at roberthderb.com (Robbie D Herb)
Date: Wed, 14 Nov 2018 03:26:07 -0000
Subject: Another Introduction
Message-ID: <dd06eee3-3fb2-b7ea-3796-0575c69cb3f4@roberthderb.com>

Hi Friends,

Since Harv started the trend, I suppose I'll join in on the 
introductions. I'm Robbie, and I actually don't remember how I came 
across Joe, probably a comment on Hacker News.

I'm a systems administrator in eastern South Dakota, and I use OpenBSD 
for most of my PCs at home. I also like animation and am currently 
working on a short animated film that I hope to turn into a series (Oh, 
not professionally or anything, just for fun).

I've been subscribed to the list for a while, and this is only my second 
or third message. I'm sort of a lurker that way, but I've definitely 
been interested in reading.

Thanks for the interesting reading, and happy hacking!

Best,

rdh

From hello at roberthderb.com  Thu Nov 22 04:33:22 2018
From: hello at roberthderb.com (Robbie D Herb)
Date: Thu, 22 Nov 2018 04:33:22 -0000
Subject: Games on FreeBSD
Message-ID: <91dd0410-90f9-22d9-3187-dc7a309de1eb@roberthderb.com>

Hey friends, by now you've all probably seen this post by now, but just 
in case someone hasn't, it's a pretty interesting read:

https://oshogbo.vexillium.org/blog/58/

Happy Thanksgiving! (Or happy Thursday if you're non-US)