2021-01-02-command-line

Here is a condensed view of programs I use to make life easier on the command-line ordered by priority:

  1. Change your shell to fish. Enough said :)

  2. Move around quickly with zoxide. It allows you to jump quickly to a directory with z boo (instead of cd /home/user/misc/books).

  3. Find files easily with fd as a remplacement for find. Here is how I converted all the markdown files to org-mode : fd md -x pandoc git mv {} {.}.org

  4. A better sudo: use doas (from OpenBSD). The configuration is super easy, just write /usr/local/etc/doas.conf (on FreeBSD) : # Permit members of the wheel group to perform actions as root. permit nopass :wheel

  5. Manage your ssh-keys with keychain. For fish shell, here’s my configuration: # Keychain for gpg and ssh. We have to set ssh and gpg. And GPG ID… if status is-login keychain –quiet –agents ssh,gpg idrsa 65DCD80B3BFE5B80 end

    if test -f ~/.keychain/(hostname)-gpg-fish
    source ~/.keychain/(hostname)-gpg-fish
end

if test -f ~/.keychain/(hostname)-fish
    source ~/.keychain/(hostname)-fish
end

  6. capture videos with Ffmpeg like this {.shell} $ ffmpeg -f x11grab -s 1280x800 -r 25 -i :0.0+nomouse -s hd720 -vcodec libx264 -vpre lossless_ultrafast -an -threads 0 yourvideo.mkv </pre>

    • removes the mouse cursor from the capture: -i :0.0+nomouse
    • enables multi-threading (if possible): -threads 0
    • captures the screen: -f x11grab
    • defines the size of the capture windows (here it is my entire screen): -s 1280x800
    • sets the number of frames per seconds: -r 25
    • sets the resolution: -s hd720
    • no audio will be captured: -an
    • using the H.264 encoding: -vcodec libx264
    • these are settings for a fast encoding: -vpre lossless_ultrafast