Entries

• Linux: recursively delete empty directories

  Solution

  # Print empty directories:
  find . -type d -empty -print
  # Delete empty directories:
  find . -type d -empty -delete

• Linux: toggle display on or off

  Solution

  Replace DP-4, 1920x1080 & 144.0 with your displays information

  xrandr --listactivemonitors | grep DP-4; if [ $? -ne 0 ]; then xrandr --output DP-4 --mode 1920x1080 --rate 144.0; else xrandr --output DP-4 --off; fi

  For scale, the font sizing of Gnome Tweaks seems to do a better trick than xrandr --scale.

• Linux Steam helpers

  Solution

  • WINEPREFIX="$(pwd)" wine "/path/to/file.exe" # Run exe using current folder as wineprefix
  • ~/.steam/steam/steamapps/compatdata/ # Default Steam prefix locations (~ is a shortcut your home directory)
  • ~/.steam/steam/steamapps/common/Proton\ 9.0\ \(Beta\)/proton # Default proton binary location (for Proton 9)

• Generate SSH key

  Solution

  ssh-keygen -t ed25519 -C "your_email@example.com"

• Run Alacritty with shell command

  Solution

  alacritty -e sh -c "echo test && sleep 2"

• tar basics

  Solution

  # Extract tar.gz
  tar -xzvf archive.tar.gz
  #		--extract --gzip --verbose --file=archive.tar.gz
  
  # Create tar.gz
  tar -czvf archive.tar.gz file1.md file2.png
  #		--create --gzip --verbose --file=archive.tar.gz paths to archive

  For non-gzip (e.g. just the .tar extension), simply remove -z/--gzip

• ffmpeg: extract one frame

  Solution

  ffmpeg -i  input.mp4  -an -ss 00:03:00 -t 00:00:00.040 '%01d.png'