Mitja Felicijan's notes

Compile drawterm on Fedora 38

Mon, 25 Sep 2023 09:04:28 +0200

First install two dependencies:

sudo dnf install libX11-devel libXt-devel

Clone the repo and compile it:

git clone git://git.9front.org/plan9front/drawterm
@@ -21,17 +21,17 @@
 CONF=unix make

That should produce drawterm binary.

AWS EB PyYAML fix

Mon, 18 Sep 2023 07:27:29 +0200

Recent update of my system completely borked EB CLIon my machine.

AWS EB PyYAML fix

Mon, 18 Sep 2023 07:27:29 +0200

Recent update of my system completely borked EB CLI on my machine.

I tried installing it with pip install awsebcli --upgrade --user and it failed.

The error was the following.

@@ -49,17 +49,17 @@ on my machine.

echo 'Cython < 3.0' > /tmp/constraint.txt
 PIP_CONSTRAINT=/tmp/constraint.txt pip install 'PyYAML==5.4.1'

Floods in Slovenia up close

Sat, 05 Aug 2023 07:06:50 +0200

Floods in Slovenia up close

Sat, 05 Aug 2023 07:06:50 +0200

@@ -70,17 +70,17 @@ on my machine.

Make B/W SVG charts with matplotlib

Tue, 01 Aug 2023 17:04:10 +0200

Install pip requirements.

Make B/W SVG charts with matplotlib

Tue, 01 Aug 2023 17:04:10 +0200

Install pip requirements.

pip install matplotlib
 pip install pandas

Example of data being used.

@@ -131,17 +131,17 @@ This is how you get a column data with pandas.

The image above is SVG and you can zoom in and out and check that the image is vector.

Set color temperature of displays on i3

Fri, 14 Jul 2023 09:19:31 +0200

I have been using Gnome's night shift for a while now and I have been missingthis feature under i3wm.

Set color temperature of displays on i3

Fri, 14 Jul 2023 09:19:31 +0200

I have been using Gnome's night shift for a while now and I have been missing this feature under i3wm. This can be done with redshift.

Reset the current settings with redshift -x

Fix screen tearing on Debian 12 Xorg and i3

Mon, 10 Jul 2023 04:21:48 +0200

I have been experiencing some issues with Intel® Integrated HD Graphics 3000under Debian 12 with Xorg and i3.

Fix screen tearing on Debian 12 Xorg and i3

Mon, 10 Jul 2023 04:21:48 +0200

I have been experiencing some issues with Intel® Integrated HD Graphics 3000 under Debian 12 with Xorg and i3. Using picom compositor didn't help. To fix this issue create new file /etc/X11/xorg.conf.d/20-intel.conf as root and put the following in the file.

@@ -172,37 +172,37 @@ EndSection

Reboot the system and that should be it.

Online radio streaming with MPV from terminal

Mon, 10 Jul 2023 03:34:45 +0200

Recently I have been using my Thinkpad x220 more and there are some constraintsI have faced with it.

Online radio streaming with MPV from terminal

Mon, 10 Jul 2023 03:34:45 +0200

Recently I have been using my Thinkpad x220 more and there are some constraints I have faced with it. CPU is not as powerful as on my main machine and I really want to listen to some music while using the machine. Browsers really are bloat.

Check out this site https://streamurl.link/ and copy the stream url and then do mpv streamlink.

60's IBM Computers Commercial

Thu, 29 Jun 2023 22:13:45 +0200

Likely aired during an hour-long program during the 1960s, long commercials suchas this typically aired during hour-long programs.

60's IBM Computers Commercial

Thu, 29 Jun 2023 22:13:45 +0200

Likely aired during an hour-long program during the 1960s, long commercials such as this typically aired during hour-long programs. They would not have aired during a half-hour program.

10/GUI 10 Finger Multitouch User Interface

Thu, 29 Jun 2023 14:51:39 +0200

Message from 10/GUI team (page 10gui.

10/GUI 10 Finger Multitouch User Interface

Thu, 29 Jun 2023 14:51:39 +0200

Message from 10/GUI team (page 10gui.com does not exist anymore):

Over a quarter-century ago, Xerox introduced the modern graphical user interface paradigm we today take for granted.

That it has endured is a testament to the genius of its design. But the @@ -233,17 +233,17 @@ poster="/notes/10gui-10-finger-multitouch-user-interface.jpg" src="/notes/10gui-10-finger-multitouch-user-interface.mp4" controls>

Alacritty open links with modifier

Sun, 25 Jun 2023 17:17:16 +0200
Alacritty by default makes all links in the terminal output clickable and thisgets annoying rather quickly.

Alacritty open links with modifier

Sun, 25 Jun 2023 17:17:16 +0200

Alacritty by default makes all links in the terminal output clickable and this gets annoying rather quickly. I liked the default behavior of Gnome terminal where you needed to hold Control key and then you could click and open links.

To achieve this in Alacritty you need to provide a hint in the configuration @@ -263,17 +263,17 @@ change command: xdg-open to something else.
pressed.

Source: https://github.com/alacritty/alacritty/issues/5246

Development environments with Nix

Sun, 25 Jun 2023 16:38:10 +0200
Nix is amazing for making reproducible cross OS development environment.

Development environments with Nix

Sun, 25 Jun 2023 16:38:10 +0200

Nix is amazing for making reproducible cross OS development environment.

First you need to install Nix package manager.

@@ -324,17 +324,17 @@ of prompt is omitted

https://mynixos.com/

Making cgit look nicer

Sat, 24 Jun 2023 13:33:58 +0200
For personal use I have a private Git serverset up and I use GitHub just as a mirror.

Making cgit look nicer

Sat, 24 Jun 2023 13:33:58 +0200

For personal use I have a private Git server set up and I use GitHub just as a mirror. By default the cgit theme looks a bit dated so I made the flowing theme.

@@ -527,17 +527,17 @@ dated so I made the flowing theme.
color: red; }

Simple presentations with Markdown

Wed, 21 Jun 2023 08:54:48 +0200
A simple way to make presentations without using desktop apps or using onlineservices is https://github.

Simple presentations with Markdown

Wed, 21 Jun 2023 08:54:48 +0200

A simple way to make presentations without using desktop apps or using online services is https://github.com/remarkjs/remark.

First create index.html and be sure you make changes to config variable.

<!DOCTYPE html> @@ -599,17 +599,17 @@ separate slides. Other stuff is just pure markdown. - Lorem ipsum dolor sit amet, consectetur adipiscing elit. - Vestibulum eget leo ac dolor venenatis pulvinar.

Bulk thumbnails

Sun, 04 Jun 2023 20:46:56 +0200
Make bulk thumbnails of JPGs with ImageMagick.

Bulk thumbnails

Sun, 04 Jun 2023 20:46:56 +0200

Make bulk thumbnails of JPGs with ImageMagick.

#!/bin/bash directory="./images/" @@ -619,17 +619,17 @@ separate slides. Other stuff is just pure markdown. convert "$file" -resize $dimensions "$file" "${file%.*}-thumbnail.jpg" done

Edsger W. Dijkstra Manuscripts ebook

Thu, 01 Jun 2023 22:47:56 +0200
I love reading the original manuscripts of Edsger W.

Edsger W. Dijkstra Manuscripts ebook

Thu, 01 Jun 2023 22:47:56 +0200

I love reading the original manuscripts of Edsger W. Dijkstra. They are available online at the University of Texas at Austin website, but I also found MOBI version. I converted it into ePub as well.

Downloads:
@@ -643,19 +643,19 @@ MOBI version. I converted it into ePub as well.

Original repository of MOBI version

Extending dte editor

Wed, 31 May 2023 08:12:45 +0200
dte is an interesting editor I startedusing lately more and more.

Extending dte editor

Wed, 31 May 2023 08:12:45 +0200

dte is an interesting editor I started using lately more and more. Since it is using execvp() it can be easily extended. I needed comment/uncomment feature so I created a small utility that does this for @@ -694,17 +694,17 @@ above.
hi linenumber blue; hi comment cyan;

Grep to Less that maintain colors

Mon, 29 May 2023 21:27:07 +0200
I often use grep to search for todo's in my code and other people's code andthen pipe them in less and I missed having colors that grep outputs in less.

Grep to Less that maintain colors

Mon, 29 May 2023 21:27:07 +0200

I often use grep to search for todo's in my code and other people's code and then pipe them in less and I missed having colors that grep outputs in less.

Grep's --color=always use markers to highlight the matching strings.
@@ -719,17 +719,17 @@ string.

Easy measure time took in a bash script

Sun, 28 May 2023 17:53:20 +0200
In Bash, the $SECONDS variable is a special variable that automatically keepstrack of the number of seconds since the current shell or script startedexecuting.

Easy measure time took in a bash script

Sun, 28 May 2023 17:53:20 +0200

In Bash, the $SECONDS variable is a special variable that automatically keeps track of the number of seconds since the current shell or script started executing. It starts counting from the moment the script begins running.

#!/bin/bash @@ -743,17 +743,17 @@ executing. It starts counting from the moment the script begins running.# Print the time elapsed. echo "Time taken: $SECONDS seconds"

Make DCSS playable on 4k displays

Sat, 27 May 2023 19:35:11 +0200
Dungeon Crawl Stone Soup has a a very small font by default.

Make DCSS playable on 4k displays

Sat, 27 May 2023 19:35:11 +0200

Dungeon Crawl Stone Soup has a a very small font by default. On a 4k display, it is barely readable. This is how I made it playable.

Make a file ~/.crawlrc with the following content:

# Adjust the sizes to your liking. @@ -769,17 +769,17 @@ is barely readable. This is how I made it playable. Guide file.
Drawing Pixels in Plan9 Sat, 27 May 2023 17:41:33 +0200 I have started exploring Plan9's graphics capabilities. Drawing Pixels in Plan9 Sat, 27 May 2023 17:41:33 +0200 I have started exploring Plan9's graphics capabilities. This is a hello world alternative for drawing that draws a yellow square on a blue background. More information: @@ -846,17 +846,17 @@ can be a valuable resource for learning about the system is the alternative for Ctrl+C). This is very cool indeed! Cronjobs on Github with Github Actions Sat, 27 May 2023 00:35:36 +0200 In the root of your repository create a folder .
Cronjobs on Github with Github Actions Sat, 27 May 2023 00:35:36 +0200 In the root of your repository create a folder .github/workflows and in that folder create a file a file cron.yaml. This file can be named whatever you wish. But it has to be a yaml file.
File below (.github/workflows/cron.yaml) describes an action that will trigger @@ -876,17 +876,17 @@ on their website http - name: Call some url run: curl 'https://example.com'

Dungeon Crawl Stone Soup - New player guide

Thu, 25 May 2023 22:00:00 +0200
An amazing game deserves an amazing guide.

Dungeon Crawl Stone Soup - New player guide

Thu, 25 May 2023 22:00:00 +0200

An amazing game deserves an amazing guide. All this material can be find in some form on another on craw's official repository.

DCSS Quickstart - Very short introduction to the @@ -981,17 +981,17 @@ don't hold back!

Pressing ^ will let you view your current god, abilities, and piety.

Display xterm color palette

Thu, 25 May 2023 12:00:00 +0200
bash xterm-palette.

Display xterm color palette

Thu, 25 May 2023 12:00:00 +0200

bash xterm-palette.sh - will show you number of max colors available

bash xterm-palette.sh -v - will create a list of all colors with codes

@@ -1067,17 +1067,17 @@ don't hold back! ;; esac | less --raw-control-chars --QUIT-AT-EOF --no-init

Sane defaults for tmux with more visible statusbar

Thu, 25 May 2023 12:00:00 +0200
# Remap prefix from 'C-b' to 'M-a'.

Sane defaults for tmux with more visible statusbar

Thu, 25 May 2023 12:00:00 +0200

# Remap prefix from 'C-b' to 'M-a'. unbind C-b set-option -g prefix M-a bind-key M-a send-prefix @@ -1104,35 +1104,35 @@ set -g window-status-current-format "#[fg=#ffffff]#[bg=#111111]#[fg=#ff set -g mouse off

My brand new Plan9/9front desktop

Wed, 24 May 2023 12:00:00 +0200
I have been experimenting with Plan9/9front for a week now.

My brand new Plan9/9front desktop

Wed, 24 May 2023 12:00:00 +0200

I have been experimenting with Plan9/9front for a week now. Noice! This is how my desktop looks like.

Parse RSS feeds with Lua

Tue, 23 May 2023 12:00:00 +0200
Example of parsing RSS feeds with Lua.

Parse RSS feeds with Lua

Tue, 23 May 2023 12:00:00 +0200

Example of parsing RSS feeds with Lua. Before running the script install:

feedparser with luarocks install feedparser

luasocket with luarocks install luasocket
@@ -1162,17 +1162,17 @@ my desktop looks like.
print("! Request failed. Status:", status) end

Extend Lua with custom C functions using Clang

Tue, 23 May 2023 12:00:00 +0200
Here is a boilerplate for extending Lua with custom C functions.

Extend Lua with custom C functions using Clang

Tue, 23 May 2023 12:00:00 +0200

Here is a boilerplate for extending Lua with custom C functions. This requires Clang and Lua 5.1 to be installed. GCC can be used instead of Clang, but the Makefile will need to be modified.

@@ -1213,17 +1213,17 @@ Makefile will need to be modified.

Execute not blocking async shell command in C#

Mon, 22 May 2023 12:00:00 +0200
Execute a shell command in async in C# while not blocking the UI thread.

Execute not blocking async shell command in C#

Mon, 22 May 2023 12:00:00 +0200

Execute a shell command in async in C# while not blocking the UI thread.

private async Task executeCopyCommand() { await Task.Run(() => @@ -1251,33 +1251,33 @@ in the method that calls executeCopyCommand(). await executeCopyCommand(); }

Change permissions of matching files recursively

Tue, 16 May 2023 12:00:00 +0200
Replace *.

Change permissions of matching files recursively

Tue, 16 May 2023 12:00:00 +0200

Replace *.xml with your pattern. This will remove executable bit from all files matching the pattern. Change + to - to add executable bit.

find . -type f -name "*.xml" -exec chmod -x {} +

Previews how man page written in Troff will look like

Mon, 15 May 2023 12:00:00 +0200
Troff is used to write man pages and it is difficult to read it so this willpreview how it will look like when it is rendered.

Previews how man page written in Troff will look like

Mon, 15 May 2023 12:00:00 +0200

Troff is used to write man pages and it is difficult to read it so this will preview how it will look like when it is rendered.

# On Linux system. groff -man -Tascii filename @@ -1285,34 +1285,34 @@ preview how it will look like when it is rendered. # On Plan9 system. man 1 filename

Convert all MKV files into other formats

Sun, 14 May 2023 12:00:00 +0200
You will need ffmpeg installed on your system.

Convert all MKV files into other formats

Sun, 14 May 2023 12:00:00 +0200

You will need ffmpeg installed on your system. This will convert all MKV files into WebM format.

# Convert all MKV files into WebM format. find ./ -name '*.mkv' -exec bash -c 'ffmpeg -i "$0" -vcodec libvpx -acodec libvorbis -cpu-used 5 -threads 8 "${0%%.mp4}.webm"' {} \;
# Convert all MKV files into MP4 format. find ./ -name '*.mkv' -exec bash -c 'ffmpeg -i "$0" c:a copy -c:v copy -cpu-used 5 -threads 8 "${0%%.mp4}.mp4"' {} \;

Download list of YouTube files

Sat, 13 May 2023 12:00:00 +0200
If you need to download a list of YouTube videos and don't want to download theactual YouTube list (which yt-dlp supports), you can use the following method.

Download list of YouTube files

Sat, 13 May 2023 12:00:00 +0200

If you need to download a list of YouTube videos and don't want to download the actual YouTube list (which yt-dlp supports), you can use the following method.

// Used to get list of raw URL's from YouTube's video tab'. // Copy them into videos.txt. @@ -1321,17 +1321,17 @@ actual YouTube list (which yt-dlp supports), you can us # This will download all videos in videos.txt. yt-dlp --batch-file videos.txt -N `nproc` -f webm
Install Plan9port on Linux Fri, 12 May 2023 12:00:00 +0200 Install Plan9port on Linux. Install Plan9port on Linux Fri, 12 May 2023 12:00:00 +0200 Install Plan9port on Linux. This applies to Plan9port. This is a port of many Plan 9 programs to Unix-like operating systems. Useful for programs like 9term and rc. @@ -1340,17 +1340,17 @@ programs to Unix-like operating systems. Useful for programs like 9t cd $HOME/plan9/plan9port ./INSTALL -r $HOME/plan9 Fix bootloader not being written in Plan9 Thu, 11 May 2023 12:00:00 +0200 If the bootloader is not being written to a disk when installing 9front on realharware try clearing first sector of the disk with the following command. Fix bootloader not being written in Plan9 Thu, 11 May 2023 12:00:00 +0200 If the bootloader is not being written to a disk when installing 9front on real harware try clearing first sector of the disk with the following command. dd if=/dev/zero of=/dev/sdX bs=512 count=1 @@ -1358,17 +1358,17 @@ harware try clearing first sector of the disk with the following command.# press delete key to stop the command. cat </dev/zero >/dev/sd*/data Take a screenshot in Plan9 Wed, 10 May 2023 12:00:00 +0200 Take a screenshot in Plan9.
Take a screenshot in Plan9 Wed, 10 May 2023 12:00:00 +0200 Take a screenshot in Plan9. This applies to Plan9 and 9front. This will take a screenshot of the screen and output it to /dev/screen. You can then use topng to convert it to a png image. @@ -1378,17 +1378,17 @@ image. # Delayed screenshot (5 seconds). sleep 5; cat /dev/screen | topng > screen.png

#cat-v on weechat configuration

Tue, 09 May 2023 12:00:00 +0200
Set up weechat to connect to #cat-v on oftc.

#cat-v on weechat configuration

Tue, 09 May 2023 12:00:00 +0200

Set up weechat to connect to #cat-v on oftc. This applies to weechat but should be similar for other irc clients.

# Install weechat and launch it and execute the following commands. @@ -1397,30 +1397,30 @@ image. /set irc.server.oftc.autojoin "#cat-v" /set irc.server.oftc.nicks "nick1,nick2,nick3"

Write ISO to USB Key

Mon, 08 May 2023 12:00:00 +0200
Write ISO to USB key.

Write ISO to USB Key

Mon, 08 May 2023 12:00:00 +0200

Write ISO to USB key. Nothing fancy here.

sudo dd if=iso_file.iso of=/dev/sdX bs=4M status=progress conv=fdatasync

Mount Plan9 over network

Sun, 07 May 2023 12:00:00 +0200
First install libfuse with sudo apt install libfuse-dev.

Mount Plan9 over network

Sun, 07 May 2023 12:00:00 +0200

First install libfuse with sudo apt install libfuse-dev.

Then clone https://github.com/ftrvxmtrx/9pfs and compile it with make.

Copy 9pfs to your path.
@@ -1433,32 +1433,32 @@ image.
9pfs 172.18.0.1 -p 9999 local_folder # mount umount local_folder # unmount

Push to multiple origins at once in Git

Sat, 06 May 2023 12:00:00 +0200
Sometimes you want to push to multiple origins at once.

Push to multiple origins at once in Git

Sat, 06 May 2023 12:00:00 +0200

Sometimes you want to push to multiple origins at once. This is useful if you have a mirror of your repository on another server. You can do this by adding multiple push urls to your git config. This is a shorthand for command above.

git config --global alias.pushall '!sh -c "git remote | xargs -L1 git push --all"'

Run 9front in Qemu

Fri, 05 May 2023 12:00:00 +0200
Run 9front in Qemu.

Run 9front in Qemu

Fri, 05 May 2023 12:00:00 +0200

Run 9front in Qemu. This applies to Plan9 and 9front.

Download from here http://9front.org/iso/.

# Create a qcow2 image. @@ -1473,98 +1473,98 @@ multiple push urls to your git config. This is a shorthand for command above.< -drive if=none,id=vd1,file=$HOME/VM/ISO/9front.386.iso \ -device scsi-cd,drive=vd1,bootindex=0

Cache busting in Hugo

Mon, 01 May 2023 12:00:00 +0200
{{ $cachebuster := delimit (shuffle (split (md5 "6fab11c6669976d759d2992eff1dd5be") "" )) "" }}<link rel="stylesheet" href="/style.

Cache busting in Hugo

Mon, 01 May 2023 12:00:00 +0200

{{ $cachebuster := delimit (shuffle (split (md5 "6fab11c6669976d759d2992eff1dd5be") "" )) "" }} <link rel="stylesheet" href="/style.css?v={{ $cachebuster }}">
This 6fab11c6669976d759d2992eff1dd5be can be random string you generate use. You can use whatever you want.