I'm not sure how I didn't previously know about https://cht.sh/, but it provides super-handy cheatsheets right in your shell - and it's AWESOME.
Usage details are at https://github.com/chubin/cheat.sh, and it didn't take me long to add it to my Nix home-manager-managed fish shell config (https://github.com/jbowdre/dotfiles/commit/e1a8a05514cca14de227e1d00447a17f5e1503cb).
@john_b Thanks this looks useful as a swiss army knife jacked up on steroids
#linux