Ctrl + _ (Ctrl + underscore)

Quite a few useful ones

For the CTRL + R tip, you can make it even better if you install fzf. Massively improves searching through history. It's worth the install just for that one feature.

Best thing I ever did as a dev was start spending more time in the terminal. Getting familiar with the tools and how they interact makes life so much easier.

I've never used the majority of these tricks for decades, except for brace expansion, process substitutions, and complex redirections.

  $ some_long_command -with -args -easily -forgotten # thatspecialthing

  $ CTRL-R<specialthing>

  $ some_long_command -with -args -easily -forgotten # thatspecialthing

  $ history | grep "\#"

Makes for a definite return of sanity ..