All commands (14,187)
-
Basically an improvement on an earlier ethtool command line. Show Sample Output
0for i in /sys/class/net/*; do e=`basename $i`; echo "# $e"; sudo ethtool $e | grep -E "Link|Speed" ; done -
Uses 'seq' with formatting parameter to generate the necessary padded sequence. Change '%02.0f' to how many digits you need (for 3, use %03.0f, etc) and replace 5 & 15 with your desired min and max. Show Sample Output
0for s in `seq -f %02.0f 5 15`; do echo $s; done -
Require "grep -P" ( pcre ). If you don't have grep -P, use that :
grep -Eo '"url":"[^"]+' $(ls -t ~/.mozilla/firefox/*/sessionstore.js | sed q) | cut -d'"' -f40grep -oP '"url":"\K[^"]+' $(ls -t ~/.mozilla/firefox/*/sessionstore.js | sed q) -
I used to do a lot of path manipulation to set up my development environment (PATH, LD_LIBRARY_PATH, etc), and one part of my environment wasn't always aware of what the rest of the environment needed in the path. Thus resetting the entire PATH variable wasn't an option; modifying it made sense. The original version of the functions used sed, which turned out to be really slow when called many times from my bashrc, and it could take up to 10 seconds to login. Switching to parameter substitution sped things up significantly. The commands here don't clean up the path when they are done (so e.g. the path gets cluttered with colons). But the code is easy to read for a one-liner. The full function looks like this:
remove_path() {eval PATHVAL=":\$$1:"PATHVAL=${PATHVAL//:$2:/:} # remove $2 from $PATHVALPATHVAL=${PATHVAL//::/:} # remove any double colons left overPATHVAL=${PATHVAL#:} # remove colons from the beginning of $PATHVALPATHVAL=${PATHVAL%:} # remove colons from the end of $PATHVALexport $1="$PATHVAL"}append_path() {remove_path "$1" "$2"eval PATHVAL="\$$1"export $1="${PATHVAL}:$2"}prepend_path() {remove_path "$1" "$2"eval PATHVAL="\$$1"export $1="$2:${PATHVAL}"}I tried using regexes to make this into a cleaner one-liner, but remove_path ended up being cryptic and not working as well:rp() { eval "[[ ::\$$1:: =~ ^:+($2:)?((.*):$2:)?(.*):+$ ]]"; export $1=${BASH_REMATCH[3]}:${BASH_REMATCH[4]}; };Show Sample Output0rp() { local p; eval p=":\$$1:"; export $1=${p//:$2:/:}; }; ap() { rp "$1" "$2"; eval export $1=\$$1$2; }; pp() { rp "$1" "$2"; eval export $1=$2:\$$1; } -
Thank You, hackerb9!
0sleep 4; xwd > /tmp/_.xwd ; gimp /tmp/_.xwd -
0unzip -l file.jar
-
Clears the package cache of all uninstalled packages. Does not remove package configuration files in user's home directory.
0sudo pacman -Sc -
Helps if you accidentally deleted files from an svn repo with plain rm and you would like to mark them for svn to delete too.
0svn status|grep -iR '^!'|sed 's/!/ /g'|xargs -i svn rm '{}' -
Archive all .sh files in a directory into a gzip archive.
0find . -type f -name '*.sh' -print | cpio -o | gzip >sh.cpio.gz -
or add this line to your ~/.vimrc if using vim
0:autocmd BufNewFile *.sh,*.bash 0put =\"#!/bin/bash\<nl># -*- coding: UTF8 -*-\<nl>\<nl>\"|$ -
I can't find the lid command on my system, there is also another complied program: http://xyne.archlinux.ca/projects/lsgrp/
0lsgrp() { read GID USERS <<< "$(grep "^$1:" /etc/group | cut -d: -f3,4 | tr ':,' ' ')" ; echo -e "${USERS// /\n}" | egrep -v "^($1)?$" ; egrep :[0-9]+:$GID: /etc/passwd | cut -d: -f1 ; } -
0ls -tl --time-style=full-iso
-
0db2 connect to STGNSY3; db2 -tvf source_CUST_DIM_DELTA.sql > kk.out
-
0find . -name vmware-*.log -exec rm -i {} \;
-
0while curl -dsL example.com 2>&1 | grep 503;do sleep 8;done;echo server up
-
Good for when you download youtube videos and want the mp3 for your mp3 player.
0for a in $(find . -maxdepth 1 -name "*.mp4" -type f -printf "%f\n" | rev | cut -d '.' -f2- | rev | sort -u); do if [ ! -f "$a.mp3" ]; then avconv -i "$a."* -vn -ab 128 "$a.mp3"; fi done -
The idea is to get the current branch name directly using git symbolic-ref --short HEAD name and not type it manually. Show Sample Output
0git push --set-upstream origin `git symbolic-ref --short HEAD` -
I don't know why you would want to echo "blocking ....", but my alternative is functionally equivalent with the extra echo.
0ASN=32934;whois -H -h riswhois.ripe.net -- -F -K -i $ASN|awk '/^'$ASN'/ {if ($2 ~ /::/) {a="6"} else {a=""};b="sudo ip"a"tables -A INPUT -s "$2" -j REJECT"; print " blocking "$2;system(b)}' -
0synclient TouchpadOff=$(synclient -l | grep -q 'TouchpadOff.*1'; echo $?)
-
For example to add up the disk usage at several disjoint locations. The $[..] is for arithmetic evaluation in bash. Alternatively pipe to the bc command. Show Sample Output
0numfmt --to=iec $[$(du -s /home/*/docs | cut -f 1 | paste -sd+)] -
0ffmpeg -i movie.mov -c:v prores -profile:v 1 -c:a pcm_s16le -vf subtitles=subtitle.ass subtitledmovie.mov
-
0jstat -gc [jvmpid]
-
0rename 's/.*/[it]$&/' *.pdf
-
0for img in $( ls *.CR2 ); do convert $img $img.jpg; done
-
emulates bash4's "echo {03..20}" Uses bash3 builtin function printf Show Sample Output
0printf "%02u " {3..20}; echo - ‹ First < 426 427 428 429 430 > Last ›
What's this?
commandlinefu.com is the place to record those command-line gems that you return to again and again. That way others can gain from your CLI wisdom and you from theirs too. All commands can be commented on, discussed and voted up or down.
Check These Out
Stay in the loop…
- Follow the Tweets.
-
Every new command is wrapped in a tweet and posted to Twitter. Following the stream is a great way of staying abreast of the latest commands. For the more discerning, there are Twitter accounts for commands that get a minimum of 3 and 10 votes - that way only the great commands get tweeted.
» http://twitter.com/commandlinefu
» http://twitter.com/commandlinefu3
» http://twitter.com/commandlinefu10 - Subscribe to the feeds.
-
Use your favourite RSS aggregator to stay in touch with the latest commands. There are feeds mirroring the 3 Twitter streams as well as for virtually every other subset (users, tags, functions,…):
Subscribe to the feed for:
- » all commands
- » commands with 3 up-votes (commandlinefu3)
- » commands with 10 up-votes (commandlinefu10)