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/SSG/ Shell Scripts General

Anonymous

loc-IN

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ITT we share useful shell scripts, commands, shortcuts, hacks, etc. that save us time and make life easier. Feel free to also ask questions around cli and shell scripting, I'll try to answer. See the FAQ to learn how to format code blocks.

Anonymous

loc-IN

I'll start bash function to go n directories up: [code] up() { local d="" local limit="$1" if [ -z "$limit" ] || [ "$limit" -le 0 ]; then limit=1 fi for ((i = 1; i <= limit; i++)); do d="../$d" done if ! cd "$d"; then echo "Couldn't go up $limit dirs." fi } [/code]

Anonymous

loc-IN

Run prev command with sudo. Can also be used as sudo replacement, "s cmd" instead of "sudo cmd" [code] s() { if [[ $# == 0 ]]; then echo sudo $(history -p '!!') sudo $(history -p '!!') else sudo "$@" fi } [/code]

Anonymous

loc-IN

little tool to bookmark and quickly jump to directories. "g ." to bookmark current directory "g -e" to edit bookmarks "g" to select and jump to bookmarked directory "g -h" for help [code] g() { local HLP=" g : list bookmarked dirs g . : add current dir to bookmarks g -e : edit bookmarks g <num> : jump to n-th dir g <regex> : jump to 1st matching dir" local D=_; local CFG="$HOME/.cdirs" case $1 in #"") [ -f "$CFG" ] && nl "$CFG" || echo "$HLP" ;; "") [ -f "$CFG" ] && D=$(cat "$CFG" | fzf) || D=_ ;; .) pwd >> "$CFG" ;; -e) ${EDITOR:-vi} "$CFG" ;; -*) echo "$HLP" ;; [1-9]*) D=$(sed -ne "${1}p" "$CFG") ;; *) D=$(grep "$1" "$CFG" | head -1) ;; esac if [ "$D" != _ ]; then [ -d "$D" ] && cd "$D" || echo "Not found" fi } [/code]

Anonymous

loc-IN

find disk usage of files: [code] doc() { du -k --max-depth=1 "$@" | sort -nr | awk ' BEGIN { split("KB,MB,GB,TB", Units, ","); } { u = 1; while ($1 >= 1024) { $1 = $1 / 1024; u += 1 } $1 = sprintf("%.1f %s", $1, Units[u]); print $0; } ' } [/code]

Anonymous

loc-IN

some bash aliases: [code] # jump to git root alias gr='cd ./$(git rev-parse --show-cdup)' # download youtube video with best quality alias ytb='yt-dlp --add-metadata -i -f bestvideo+bestaudio' # play static noise alias whitenoise='play -q -c 2 -n synth brownnoise band -n 1600 1500 tremolo .1 30' [/code]

Anonymous

loc-IN

>>2734 Where can I learn she'll scripting anon? Give resources

Anonymous

loc-IN

>>2742 Start with https://linuxcommand.org/

Anonymous

loc-IN

>>2735 >>2736 >>2737 >>2738 Thanks man! these were helpful, I didn't even know i needed them till i saw the scripts.