TikZ Basics

I want to start sharing my knowledge about TikZ in here.
For now just look at this demo i made:

output file: tikz-demo.pdf
source code: tikz-demo.tex

Searxng using Docker and Nginx

You don't need to be a docker wizard to setup searxng, i'll show you step by step.
Unfortunately we are banned from Docker Hub so you should do something:
- registry key (the one i use)
- dns/proxy

Change the registry key in Docker Daemon file:

/etc/docker/daemon.json
-------------
{
  "registry-mirrors": ["https://docker.iranserver.com"]
}

Or you can pass it through the daemon as an argument:
# dockerd --registry-mirror "<url>"

I like to run Docker as a non-root user, so first add your user to 'docker' group:
# usermod -a -G docker <user>

! Now if you want to run Searxng on your pc for testing purposes, just follow
the original document . I'll show you the setup in a vps with domain, so it depends
on your needs to follow or not.

First you need a domain/sub domain, i like the name sx.<domain> but it's yours.

- create a directory for the Container and cd to it.
- choose a port for docker, i choose 1234 for example.

Pull the image:
$ docker pull searxng/searxng
Create and run the container:
$ docker run --rm -d -p 8791:8080 -v "${PWD}/searxng:/etc/searxng" searxng/searxng

!! the important thing you should do is this option in 'searxng/settings.yml' file
that you need root access to edit:
base_url: https://sx.nopwd.lol/
* just search for 'base_url' and change it from 'false' to the url you want.

It's time to setup Nginx and we are done.
! Setup SSL with Certbot and change domain.com to your own.

Copy

server {
	listen 80;
	listen [::]:80;
	server_name domain.com;

	location / {
		proxy_pass http://127.0.0.1:8791/;
		proxy_buffering off;
		proxy_set_header Host $host;
		proxy_set_header X-Real-IP \$remote_addr;
	}

	listen 443 ssl;
	ssl_certificate /etc/letsencrypt/live/domain.com/fullchain.pem;
	ssl_certificate_key /etc/letsencrypt/live/domain.com/privkey.pem;
	include /etc/letsencrypt/options-ssl-nginx.conf;
	ssl_dhparam /etc/letsencrypt/ssl-dhparams.pem;
}



Just reload the server and done!
$ systemctl reload nginx

I hope this article helped you, it took me some days to figure it out.

Proxy in terminal

First of all you should know that most of the downloading and uploading are done
by curl program. in this article i'm talking about telling
this program to use proxy and how to use shell to make this process faster.

As the manpage says it looks for two environment variables that you should export:
$ export http_proxy="http://<address>:<port>"
for example:
$ export http_proxy="http://127.0.0.1:2081"
and also another one for https protocol:
$ export https_proxy=$http_proxy

Programs mostly use curl for transfering data so now you are using proxy. when you done
your job and don't want to use proxy anymore, you should unset this variables:
$ unset http_proxy https_proxy

You can simply make a shell function for toggling proxy. put this in your '.bashrc'
or '.zshrc' and if you are using fish you shouldn't use that:

Now you can simply use that function:
$ toggle_proxy
and where you are done:
$ toggle_proxy

I hope this article helped you. you can email me: ryo@nopwd.lol

Send signal to process

test
In unix you can send different signals to processes or group of processes.
Think of it as a command, you send that to a program for different goals.

*) How can i send that?
There is a simple CLI program called 'kill' for this job.

List all signal names
$ kill -l

Send a signal <signame> to a process with id <pid>:
$ kill -s <signame> <pid>
Also you can put signal number instead of it's name:
$ kill -<signum> <pid>

*) How to find a process id(pid)?
You can find it using 'pgrep', for example to find the pid of surf browser:
$ pgrep surf
Note: if you have multiple instances of a program, you will get the pid of all of them.

*) How 'kill' command itself works?
The 'signal' is a concept in unix so you use it in your C programs, this 'kill' command
is just a program that uses this feature. Check out the signal(7) man page for more info.

For example in Suckless Surf browser you can reload the browser by sending SIGHUP signal.
$ kill -s SIGHUP $(pgrep surf)

Screen Brightness

- This solution does not depend on x11 or wayland.
- You don't need root permission.

There is program called brightnessctl that you can use for this job, That's included
in many distributions like Arch and Void. Simply set the brightness:
$ brightnessctl set 400

*) I wrote this simple script to avoid being flashbanged when starting computer at night:

You should run this script at startup, for example in .xinitrc file:
dash /path/to/script.sh
Note: remember to place it somewhere before executing the window manager.

*) Also you can give shortcuts to increase/decrease the brightness.
For example in bspwm config file:

super + F11
	brightnessctl set +50

super + F12
	brightnessctl set 50-

Installing GTK themes

You can easily install new GTK themes, just follow this steps:

First download the theme and check that it contain xfwm folder, for example you can get
my favorite one Raleigh, old but gold.

Now you should move the theme folder(e.g /themes/Raleigh-Dark) to a specific path like
$HOME/.local/share/themes(you can put it in $HOME/.themes but don't do it). Also move
the icon folder(e.g /icons/Raleigh-Dark) to $HOME/.local/share/icons.

More info in arch wiki.
Then just tell the GTK to use this theme and icon:

~/.config/gtk-3.0/settings.ini
------------
[Settings]
gtk-theme-name = Raleigh-Dark
gtk-icon-theme-name = Raleigh-Dark

Done! just quit and reopen the gtk apps.

* But i don't like this boomer theme
Most of the people not going to like my opinion, for them i suggest Yaru.
It is a bloat one so it take some minutes to clone, also you can just get latest tag.

After cloning or extracting the compressed tag you should build and compile it:
$ mkdir build; cd build
$ meson setup . .. -D prefix=$HOME/.local -D buildtype=release
$ ninja install

Now you have installed the most bloat theme ever, just go to the settings.ini and change
the names to Yaru-dark.

Torrent Guide

You should be careful about torrent websites, you're on your own, but you can decrease
the risk by some researching. Find official URL of the torrent sites from subreddits.
Check the number of seeds, five is good. Seed is a computer that sharing file(s).

After getting the torrent file or magnet link you need a bittorrent client.
I use transmission because it is lightweight and easy to use, also you can find it in most of distributions.
voidlinux: transmission
archlinux: transmission-cli

First you need to run the daemon:
$ transmission-daemon

You can check the content of a torrent file with:
$ transmission-show somefile.torrent
but it only works with files not magnet links.

Get the status of all torrents you have been added:
$ transmission-remote --list
Note: You need the ID of the added torrent for later steps.

Add the torrent file or magnet link to the client but start the download paused.
I guessed you don't want all files, if so, just remove the last switch and go to stop part:
$ transmission-remote --add somefile.torrent --start-paused
Note: In case of magent link don't forget to put '"' around the link.
If it succeed, it will give you a success message.

Then list files of the torrent:
$ transmission-remote --torrent <ID> --files
As you can see the Get option for all of them is Yes so if you start, all of them
will start downloading, so set all of them to No by:
$ transmission-remote --torrent <ID> --no-get all

Now select file(s) that you want:
$ transmission-remote --torrent <ID> --get <num>,<num>,...
For example:
$ transmission-remote --torrent 1 --get 5,7-10,4,2
It marks files #5, #7, #8, #9, #10 and #4 to the download list.
Now start the torrent:
$ transmission-remote --torrent <ID> --start

You can check the status with:
$ transmission-remote --torrent <ID> --list
By using Watch command you don't need to enter that many times:
$ watch transmission-remote --torrent <ID> --list

After it is downloaded just stop it from seeding(uploading):
$ transmission-remote --torrent <ID> --stop

+ Getting notification after download completed
In the daemon settings file there is two options for this:
$HOME/.config/transmission-daemon/settings.json

...
"script-torrent-done-enabled": true,
"script-torrent-done-filename": "~/.local/script/tordone.sh",
...

The tordone.sh script is where we want to call our notification to say something:

#!/usr/bin/env dash
dunstify "Torrent Done"

Also don't forget to make it executable:
$ chmod u+x tordone.sh

* Does this client only has this little options?
No, you can find many more options in the manual(transmission-remote(1) manpage).
For example how to limit the download speed, or how to change download folder.

Swap Capslock and Escape

Great location, useless job, it's capslock.
$ setxkbmap -option caps:swapescape
Put it on in your .xinitrc file, before running window manager.
The 'swapescape' is the mostly used option but not the only one, you can see
all of the options with their description in this file:
/usr/share/X11/xkb/rules/base.lst
Just search for the word 'caps:'.

Read news using RSS

Instead of going to each program's website to check for updates you can use RSS to read
them all in one place. It's just an XML file called feed, that contains the information
and you can put that into a RSS client and done!

Many websites have RSS feeds, they mostly put the link of that in an icon like this:


- What client i suggest? newsboat
It is easy to use and also terminal BASED, also in the Void and Arch repository.
After installing, you need to create this file:
$HOME/.config/newsboat/urls

With this content:
https://ryo.nopwd.lol/rss.xml
https://lukesmith.xyz/index.xml
https://voidlinux.org/atom.xml
https://brycevandegrift.xyz/rss.xml

Now just start 'newsboat' program, you need to reload the feeds(press R), enjoy!

No to Videos, Templates...

If you hate those annoying folders like Videos, Templates, Downloads etc, that always
respawned after you delete them, just do this simple thing:
There is a file named 'user-dirs.dirs' in '$HOME/.config' path, just change the content
to whatever you want, also you can remove them so you'll get rid of them.
This is my config for this file, enjoy the minimalism:

XDG_DESKTOP_DIR="$HOME/.local/desktop"
XDG_DOWNLOAD_DIR="$HOME/pocket/browser"