More shell tricks and bash wizardry !

Bash default kb shortcuts list: ss64.com/bash/...
Some more assorted tips and tricks to save you time in the Linux (or Unix) shell. Most of these apply no matter your shell of choice (bash, zsh, fish, dash, etc) but $RANDOM is exclusive to bash and zsh.
As always feel free to comment more shell tricks, or any corrections etc. :^)
Wallpaper is by Alois Arnegger - Alpine Glow Kitzbühel.
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