Published at 2022-06-15T08:47:44+01:00; Updated at 2022-06-18
This blog post is a bit different from the others. It consists of multiple but smaller projects worth mentioning. I got inspired by Julia Evan's "Tiny programs" blog post and the side projects of The Sephist, so I thought I would also write a blog posts listing a couple of small projects of mine:
=> Tiny programs | The Sephist's project list
Working on tiny projects is a lot of fun as you don't need to worry about any standards or code reviews and you decide how and when you work on it. There aren't restrictions regarding technologies used. You are likely the only person working on these tiny projects and that means that there is no conflict with any other developers. This is complete freedom :-).
But before going through the tiny projects let's take a paragraph for the 1y anniversary retrospective.
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`..'1y anniversary
1y anniversary
It has been one year since I started posting regularly (at least once monthly) on this blog again. It has been a lot of fun (and work) doing so for various reasons:
:spell in Vim or the LibreOffice checker. This post was checked with the write-better Node application.
Retrospectively, these have been the most popular blog posts of mine over the last year:
=> Keep it simple and stupid | Creative universe | Bash Golf series | How to stay sane as a DevOps person | Perl is still a great choice
But now, let's continue with the small projects worth mentioning :-)
=> https://codeberg.org/snonux/photoalbum ### The Irregular Ninja Photography is one of my casual hobbies. I love to capture interesting perspectives and motifs. I love to walk new streets and neighbourhoods I never walked before so I can capture those unexpected motifs, colours and moments. Unfortunately, because of time constraints (and sometime weather constraints), I do that on a pretty infrequent basis. => ./sweating-the-small-stuff/ninja.jpg More than 10 years ago I wrote the bespoke small static photo album generator in Bash `photoalbum.sh` which I recently refactored to a modern Bash coding style and also freshened up the Cascading Style Sheets. Last but not least, the new domain name `irregular.ninja` has been registered. The thumbnails are presented in a random order and there are also random CSS effects for each preview. There's also a simple background blur for each page generated. And that's all in less than 300 lines of Bash code! The script requires ImageMagick (available for all common Linux and *BSD distributions) to be installed. As you can see, there is a lot of randomization and irregularity going on. Thus, the name "Irregular Ninja" was born. => https://irregular.ninja I only use a digital compact camera or a smartphone to take the photos. I don't like the idea of carrying around a big camera with me "just in case" so I keep it small and simple. The best camera is the camera you have with you. :-) I hope you like this photo site. It's worth checking it out again around once every other month! ## Random journal page extractor I bullet journal. I write my notes into a Leuchtturm paper notebook. Once full, I am scanning it to a PDF file and archive it. As of writing this, I am at journal #7 (each from 123 up to 251 pages in A5). It means that there is a lot of material already. Once in a while I want to revisit older notes and ideas. For that I have written a simple Bash script `randomjournalpage.sh` which randomly picks a PDF file from a folder and extracts 42 pages from it at a random page offset and opens them in a PDF viewer (Evince in this case, as I am a GNOME user). => https://codeberg.org/snonux/randomjournalpage There's also a weekly `CRON` job on my servers to send me a reminder that I might want to read in my old journals again. My laptop also runs this script each time it boots and saves the output to a NextCloud folder. From there, it's synchronized to the NextCloud server so I can pick it up from there with my smartphone later when I am "on the road". ## Global uptime records statistic generator
❯ perl ~/git/guprecords/src/guprecords --indir=./stats/ --count=20 --all Pos | System | Kernel | Uptime | Boot time 1 | sun | FreeBSD 10.1-RELEA.. | 502d 03:29:19 | Sun Aug 16 15:56:40 2015 2 | vulcan | Linux 3.10.0-1160... | 313d 13:19:39 | Sun Jul 25 18:32:25 2021 3 | uugrn | FreeBSD 10.2-RELEASE | 303d 15:19:35 | Tue Dec 22 21:33:07 2015 4 | uugrn | FreeBSD 11.0-RELEA.. | 281d 14:38:04 | Fri Oct 21 15:22:02 2016 5 | deltavega | Linux 3.10.0-957.2.. | 279d 11:15:00 | Sun Jun 30 11:42:38 2019 6 | vulcan | Linux 3.10.0-957.2.. | 279d 11:12:14 | Sun Jun 30 11:43:41 2019 7 | deltavega | Linux 3.10.0-1160... | 253d 04:42:22 | Sat Apr 24 13:34:34 2021 8 | host0 | FreeBSD 6.2-RELEAS.. | 240d 02:23:23 | Wed Jan 31 20:34:46 2007 9 | uugrn | FreeBSD 11.1-RELEA.. | 202d 21:12:41 | Sun May 6 18:06:17 2018 10 | tauceti | Linux 3.2.0-4-amd64 | 197d 18:45:40 | Mon Dec 16 19:47:54 2013 11 | pluto | Linux 2.6.32-5-amd64 | 185d 11:53:04 | Wed Aug 1 07:34:10 2012 12 | sun | FreeBSD 10.3-RELEA.. | 164d 22:31:55 | Sat Jul 22 18:47:21 2017 13 | vulcan | Linux 3.10.0-1160... | 161d 07:08:43 | Sun Feb 14 10:05:38 2021 14 | sun | FreeBSD 10.3-RELEA.. | 158d 21:18:36 | Sat Jan 27 10:18:57 2018 15 | uugrn | FreeBSD 11.1-RELEA.. | 157d 20:57:24 | Fri Nov 3 05:02:54 2017 16 | tauceti-f | Linux 3.2.0-3-amd64 | 150d 04:12:38 | Mon Sep 16 09:02:58 2013 17 | tauceti | Linux 3.2.0-4-amd64 | 149d 09:21:43 | Mon Aug 11 09:47:50 2014 18 | pluto | Linux 3.2.0-4-amd64 | 142d 02:57:31 | Mon Sep 8 01:59:02 2014 19 | tauceti-f | Linux 3.2.0-3-amd64 | 132d 22:46:26 | Mon May 6 11:11:35 2013 20 | keppler-16b | Darwin 13.4.0 | 131d 08:17:12 | Thu Jun 11 10:44:25 2015
It can also sum up all uptimes for each host to generate a total per host uptime top list:
❯ perl ~/git/guprecords/src/guprecords --indir=./stats/ --count=20 --total Pos | System | Kernel | Uptime | 1 | uranus | Linux 5.4.17-200.f.. | 1419d 19:05:39 | 2 | sun | FreeBSD 10.1-RELEA.. | 1363d 11:41:14 | 3 | vulcan | Linux 3.10.0-1160... | 1262d 20:27:48 | 4 | uugrn | FreeBSD 10.2-RELEASE | 1219d 15:10:16 | 5 | deltavega | Linux 3.10.0-957.2.. | 1115d 06:33:55 | 6 | pluto | Linux 2.6.32-5-amd64 | 1086d 10:44:05 | 7 | tauceti | Linux 3.2.0-4-amd64 | 846d 12:58:21 | 8 | tauceti-f | Linux 3.2.0-3-amd64 | 625d 07:16:39 | 9 | host0 | FreeBSD 6.2-RELEAS.. | 534d 19:50:13 | 10 | keppler-16b | Darwin 13.4.0 | 448d 06:15:00 | 11 | tauceti-e | Linux 3.2.0-4-amd64 | 415d 18:14:13 | 12 | moon | Darwin 18.7.0 | 326d 11:21:42 | 13 | callisto | Linux 4.0.4-303.fc.. | 303d 12:18:24 | 14 | alphacentauri | FreeBSD 10.1-RELEA.. | 300d 20:15:00 | 15 | earth | Linux 5.13.14-200... | 289d 08:05:05 | 16 | makemake | Linux 5.11.9-200.f.. | 286d 21:53:03 | 17 | london | Linux 3.2.0-4-amd64 | 258d 15:10:38 | 18 | fishbone | OpenBSD 4.1 .. | 223d 05:55:26 | 19 | sagittarius | Darwin 15.6.0 | 198d 23:53:59 | 20 | mars | Linux 3.2.0-4-amd64 | 190d 05:44:21 |
=> https://codeberg.org/snonux/guprecords
This all is of no real practical use but fun!
The rexfiles project contains all Rex files for my (personal) server setup automation. A Rexfile is written in a Perl DSL run by the Rex configuration management system. It's pretty much KISS and that's why I love it. It suits my personal needs perfectly.
=> https://codeberg.org/snonux/rexfiles | https://www.rexify.org
This is an E-Mail I posted to the Rex mailing list:
Hi there! I was searching for a simple way to automate my personal OpenBSD setup. I found that configuration management systems like Puppet, Salt, Chef, etc.. were too bloated for my personal needs. So for a while I was configuring everything by hand. At one point I got fed up and started writing Shell scripts. But that was not the holy grail so that I looked at Ansible. I found that Ansible had some dependencies on Python on the target machine when you want to use all the features. Furthermore, I am not really familiar with Python. But then I remembered that there was also Rex. It's written in my beloved Perl. Also, OpenBSD comes with Perl in the base system out of the box which makes it integrate better than all my scripts (automation and also scripts deployed via the automation to the system) are all in the same language. Rex may not have all the features like other configuration management systems, but its easy to work-around or extend when you know Perl. Thanks!
./rubyfy.rb -c 'hostname' <<< foo.example.com
./rubyfy.rb --parallel 10 --root --command 'id' < serverlist.txt
./rubyfy.rb -p 50 -r -b -c '/usr/local/scripts/fancy.zsh' < serverlist.txt
echo {foo,bar}.example.com | ./rubyfy.rb -p 10 -c 'pgrep -lf httpd' -n grep.txt
echo foo.example.com |
./rubyfy.rb --root --command reboot --precondition /var/run/maintenance.lock
=> https://codeberg.org/snonux/rubyfy ## A KISS dynamic DNS solution
Syntax (this must run from the client connecting to the DNS server through SSH):
ssh dyndns@dyndnsserver /path/to/dyndns-update \
your.host.name. TYPE new-entry TIMEOUTThis is a real world example:
ssh dyndns@dyndnsserver /path/to/dyndns-update \ local.buetow.org. A 137.226.50.91 30
=> https://codeberg.org/snonux/dyndns
This is a tiny GNU Awk script for Linux which displays information about the CPU. All what it does is presenting /proc/cpuinfo in an easier to read way. The output is somewhat more compact than the standard lscpu command you find commonly on Linux distributions.
❯ ./cpuinfo cpuinfo (c) 1.0.2 Paul Buetow 11th Gen Intel(R) Core(TM) i7-1185G7 @ 3.00GHz GenuineIntel 12288 KB cache p = 001 Physical processors c = 004 Cores s = 008 Siblings (Hyper-Threading enabled if s != c) v = 008 [v = p*c*(s != c ? 2 : 1)] Total logical CPUs Hyper-Threading is enabled 0003000 MHz each core 0012000 MHz total 0005990 Bogomips each processor (including virtual) 0023961 Bogomips total
=> https://codeberg.org/snonux/cpuinfo
This is a shell wrapper to use the standard diff tool over the network to compare a file between two computers. It uses NetCat for the network part and also encrypts all traffic using OpenSSL. This is how its used:
tmux here). 2. Run on the first host netdiff otherhost.example.org /file/to/diff.txt and run on the second host netdiff firsthost.example.org /file/to/diff.txt. 3. You then will see the file differences.=> https://codeberg.org/snonux/netdiff
This is a shell script for the Mutt email client for delaying sending out E-Mails. For example, you want to write an email on Saturday but don't want to bother the recipient earlier than Monday. It relies on CRON.
=> https://codeberg.org/snonux/muttdelay
=> ./sweating-the-small-stuff/jsmstrade.png => https://codeberg.org/snonux/jsmstrade => https://smstrade.de ## IPv6 and IPv4 connectivity testing site
I don't have it running on any of my servers at the moment. This means that there is no demo to show now. Sorry!
=> https://codeberg.org/snonux/jsmstrade ## Debian running on "your" Android phone Debroid is a tutorial and a set of scripts to install and to run a Debian `chroot` on an Android phone. => ./2015-12-05-run-debian-on-your-phone-with-debroid.gmi Check out my previous post about it I am not using Debroid anymore as I have switched to Termux now. => https://termux.com ## Perl service framework PerlDaemon is a minimal daemon for Linux and other Unix like operating systems programmed in Perl. It is a minimal but pretty functional and fairly generic service framework. This means that it does not do anything useful other than providing a framework for starting, stopping, configuring and logging. To do something useful, a module (written in Perl) must be provided. => ./2011-05-07-perl-daemon-service-framework.gmi Checkout my previous post about it ## More There are more projects on my Codeberg page but they aren't as tiny as the ones mentioned in this post or aren't finished yet so I won't bother listing them here. However, there also a few more scripts used frequently by me (not publicly accessible (yet?)) which I would like to mention here: ### Work time tracker
It has some special features such as tracking time for self-improvement/development, days off and time spent at the lunch break and time spent on Pet Projects.
An example weekly report looks like this (I often don't track my lunch time but what I do instead I stop the work timer when I go out for lunch and start the work timer once back at the desk):
Mon 20211213 50: work:5.92h
Tue 20211214 50: work:7.47h lunch:0.50h pet:0.42h
Wed 20211215 50: work:8.86h pet:0.50h
Thu 20211216 50: work:8.02h pet:0.50h
Fri 20211217 50: work:9.81h
* Sat 20211218 50: work:0.00h selfdevelopment:1.00h
* Sun 20211219 50: work:2.08h pet:1.00h selfdevelopment:-2.08h
================================================
balance:0.06h work:42.15h lunch:0.50h pet:2.42h selfdevelopment:-1.08h buffer:8.38hAll I do when I start work is to run the wtlogin command and after finishing work to run the wtlogout command. My shell will remind me when I work without having logged in. It uses a simple JSON database which is editable with wtedit (this opens the JSON in Vim). The report shown above can be generated with wtreport. Any out-of-bounds reporting can be added with the wtadd command.
The tool is command line driven but also provides an interactive shell when invoked with `geheim shell`. It also works on my Android phone via Termux so I have all my documents and passwords always with me. ### Backup procedure
=> Check out my offsite backup series
Here's a bonus...
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E-Mail your comments to paul@nospam.buetow.org :-)
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