Commands by Natureshadow

Commands by Natureshadow (4)

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Recursively remove directory with many files quickly

rsync'ing an empty directory over a directory to be deleted recursively is much faster than using rm -rf, for various reasons. Relevant only for directories with really a lot of files.
This is sample output - yours may be different.
4

blank=$(mktemp -d); rsync --delete "$blank/" "bigdir/"; rmdir "$blank"

Natureshadow · 2016-02-15 11:23:15 12
Count relevant lines of shell code in a git repo

Uses git grep for speed, relies on a valid she-bang, ignores leading whitespace when stripping comments and blank lines Show Sample Output
This is sample output - yours may be different.
```
% egrep -v '^\s*($|#)' $(git grep -l '#!/bin/.*sh' *) | wc -l
14079
```
0

egrep -v '^\s*($|#)' $(git grep -l '#!/bin/.*sh' *) | wc -l

Natureshadow · 2016-02-15 11:15:48 15
Deal with dot files safely
This is sample output - yours may be different.
0

rm -rf .[!.]*

Natureshadow · 2011-03-11 07:39:42 4
Kill a process by its partial name

pkill is a standard command and kills processes Byte part of their name.
This is sample output - yours may be different.
1

pkill name

Natureshadow · 2011-03-11 07:00:41 4

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Run bash on top of a vi session (saved or not saved), run multiple commands, instead of one at a time with :!(bashcommand), type exit and [enter] to get back to where you left off in vi.

Helps when I'm editing a script and want to double check some commands without having to exit out of vi multiple times or having to use another terminal session.

List all authors of a particular git project

List everyone who committed to a particular project, listed alphabetically. To list by commits, add -n to the shortlog.

Check every URL redirect (HTTP status codes 301/302) with curl

curl -sLkIv --stderr - https://t.co/2rQjHfptZ8 -s: silences the output when piped to a different command -L: follow every redirect -k: ignores certificate errors -I: just request the headers -v: be verbose --stderr - : redirect stderr to stdout https://t.co/2rQjHfptZ8: URL to check for redirects piped to grep -i location: -i: grep target text ignoring case location: : greps every string containing "location:" piped to awk {'print $3'} prints the third column in every string piped to sed '/^$/d' removes blank lines

list files recursively by size

Convert seconds to [DD:][HH:]MM:SS

Converts any number of seconds into days, hours, minutes and seconds. sec2dhms() { declare -i SS="$1" D=$(( SS / 86400 )) H=$(( SS % 86400 / 3600 )) M=$(( SS % 3600 / 60 )) S=$(( SS % 60 )) [ "$D" -gt 0 ] && echo -n "${D}:" [ "$H" -gt 0 ] && printf "%02g:" "$H" printf "%02g:%02g\n" "$M" "$S" }

List mp3 files with less than 320 kbps bitrate.

list block devices

Shows all block devices in a tree with descruptions of what they are.

reverse order of file

post data with a http request

Find the package that installed a command

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