Linux-Setup-Tweaks-Unknows

Sign, handwrite, sketch on PDF (stylus + mouse)

• Xournal http://xournal.sourceforge.net/

Bluetooth

• Install Bluetooth stack if not installed
  sudo apt install bluez bluez-tools

• Better Bluetooth manager
  sudo apt install blueman. Once installed run blueman-manager

Audio

• PulseAudio Voulume controll
  sudo apt install pavucontrolFcli

Set System limit for number of file watchers

• set max_user_watches then reload and apply system parameters to the current system
  echo fs.inotify.max_user_watches=524288 | sudo tee -a /etc/sysctl.conf && sudo sysctl -p

Install ngrok

sudo apt-get update
sudo apt-get install unzip wget
wget https://bin.equinox.io/c/4VmDzA7iaHb/ngrok-stable-linux-amd64.zip
unzip ngrok-stable-linux-amd64.zip
sudo mv ./ngrok /usr/bin/ngrok
ngrok

How to kill a process running on particular port in Linux?

sudo fuser -k 9229/tcp npx kill-port 9229

Gnome screenshot tools crashing when selecting area

• Looks like a Ubuntu bug. Tool is crashing when clipboard wasn't empty when taking the screenshot. Refs & Credit
  xclip -selection clipboard /dev/null

How do I set a hotkey for toggling the microphone on/off?

Credits / source: https://forums.linuxmint.com/viewtopic.php?t=294680
Keyboard shortcuts > Microphone mute/unmute

List available smb shares on a network

Credits / source: https://serverfault.com/a/166255
This command is a very little known secret of Samba. It returns IP adresses of all Samba servers in one's own broadcast domain:

nmblookup __SAMBA__

This one returns a list of all NetBIOS names and their aliases of all Samba servers in the neighbourhood (it does a 'node status query'):

nmblookup -S __SAMBA__

This one returns a list of all IP adresses of SMB servers (that is, Linux+Unix/Samba or Windows) in the neighbourhood:

nmblookup '*'

Finally, all NetBIOS names and their aliases of all SMB servers (Linux+Unix/Samba or Windows):

nmblookup -S '*'

APT check available packages - installed and candidates for install

apt-cache policy nvim

Linux CLI

Fastest Way To Copy a Directory In Linux - user tar

cd /path/to/SOURCE_FOLDER; tar cf - . | (cd /path/to/DESTINATION_FOLDER; tar xvf -)

alternatives

• Add manually Neovim to alternatives list

sudo update-alternatives --install /usr/bin/editor editor /snap/bin/nvim 1111

• Change the default edtiro

sudo update-alternatives --config editor 

grep snippets

Search for a specific pattern or text in files within a directory and its subdirectories recursively.

grep -rn "pattern" /path/to/search
grep -rn "example" .

Neovim + tmux input cursor

Add to tmux.conf file.

# Allowe for Neovim input cursor. https://vi.stackexchange.com/a/22239
set -as terminal-overrides '*:Ss=\E[%p1%d q:Se=\E[2 q'

The . represents the current directory. Adjust the pattern and path as needed for your specific use case.

Audio Video

Edit video tracks - remove embeded subtitles

https:/mifi/lossless-cut?tab=readme-ov-file

Locale

Set the keyboard using the X Keyboard Extensions.

setxkbmap pl

i3-wm

## Modify // Carry Window to Next Free Workspace // <><Alt> ` ##
set_from_resource $i3-wm.binding.take_next_free i3-wm.binding.take_next_free Mod1+grave
bindsym $mod+$i3-wm.binding.take_next_free exec --no-startup-id /usr/bin/i3-next-workspace --move-window-and-follow

# ## Navigate // Next Free Workspace // <> ` ##
set_from_resource $i3-wm.binding.next_free i3-wm.binding.next_free grave
bindsym $mod+$i3-wm.binding.next_free exec --no-startup-id /usr/bin/i3-next-workspace

## Modify // Move Window to Next Free Workspace // <><Shift> ` ##
set_from_resource $i3-wm.binding.move_next_free i3-wm.binding.move_next_free Shift+grave
bindsym $mod+$i3-wm.binding.move_next_free exec --no-startup-id /usr/bin/i3-next-workspace --move-window