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Can't remember the name of that one command line tool? Next time, add a comment! (programming.dev)

submitted 1 year ago by [email protected] to c/[email protected]

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One of my favorite command line tips: you can add 'comments' full of keywords to shell commands, which makes searching your command history easier.

> obscure-cmd --with-weird-flags -Qdt # searchable comment keywords

Presumably you're using something like fzf for history search, but this is still useful without it.

This is especially useful for cli tools with obscure names/flags, or when you can't remember where a particular log file is.

Some examples from my history:

tail awesomewm logs:

tail -f ~/.cache/awesome/logs -n 2000 # tail follow log awesomewm

fix linux clock drift:

sudo ntpd -qg && sudo hwclock --systohc # fix linux clock time drift

copy ngrok public url to clipboard:

curl -s http://localhost:4040/api/tunnels | jq ".tunnels[0].public_url" | tr -d '"' | tr -d '\n' | xclip -selection clipboard -i # fetch ngrok url uri, copy to clipboard

sign ssh and gpg, then refresh the emacs keychain env:

keychain --agents gpg,ssh --eval id_rsa <some-gpg-id> && emacsclient -e '(keychain-refresh-environment)' # sign ssh,gpg password, refresh emacs env

Another gpg one:

git config commit.gpgsign false # disable gpg signing for this repo

Pacman/pamac commands, like listing orphaned packages:

pacman -Qdt # list orphans
pamac list -o # list orphans

xprop - super useful for debugging window management, for some reason i can never remember what it's called:

xprop # mouse click window x11 linux describe info client helper whateveritscalled

Some helpers from my clawe project:

bb --config ~/russmatney/clawe/bb.edn -x clawe.sxhkd.bindings/reset-bindings # reset sxhkd bindings
bb --config ~/russmatney/clawe/bb.edn -x clawe.restart/reload # reload clawe

Aliases come to mind as well - in some cases that might be a better fit. I like this because it's so low-lift.

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[–] [email protected] 4 points 1 year ago (2 children)

Good idea.

Another tool in the same vein is tldr:

$ tldr tar

  tar

  Archiving utility.
  Often combined with a compression method, such as gzip or bzip2.
  More information: https://www.gnu.org/software/tar.

  - [c]reate an archive and write it to a [f]ile:
    tar cf path/to/target.tar path/to/file1 path/to/file2 ...

  - [c]reate a g[z]ipped archive and write it to a [f]ile:
    tar czf path/to/target.tar.gz path/to/file1 path/to/file2 ...

  - [c]reate a g[z]ipped archive from a directory using relative paths:
    tar czf path/to/target.tar.gz --directory=path/to/directory .

  - E[x]tract a (compressed) archive [f]ile into the current directory [v]erbosely:
    tar xvf path/to/source.tar[.gz|.bz2|.xz]

  - E[x]tract a (compressed) archive [f]ile into the target directory:
    tar xf path/to/source.tar[.gz|.bz2|.xz] --directory=path/to/directory

  - [c]reate a compressed archive and write it to a [f]ile, using [a]rchive suffix to determine the compression program:
    tar caf path/to/target.tar.xz path/to/file1 path/to/file2 ...

  - Lis[t] the contents of a tar [f]ile [v]erbosely:
    tar tvf path/to/source.tar

  - E[x]tract files matching a pattern from an archive [f]ile:
    tar xf path/to/source.tar --wildcards "*.html"

[–] [email protected] 3 points 1 year ago (1 children)

tealdear is my recommendation

[–] [email protected] 1 points 1 year ago

Nice. Classic rust reimplementation.

[–] [email protected] 2 points 1 year ago

Yesssss tldr is awesome!