Hide

What's this?

commandlinefu.com is the place to record those command-line gems that you return to again and again.

Delete that bloated snippets file you've been using and share your personal repository with the world. 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.


If you have a new feature suggestion or find a bug, please get in touch via http://commandlinefu.uservoice.com/

Get involved!

You can sign-in using OpenID credentials, or register a traditional username and password.

First-time OpenID users will be automatically assigned a username which can be changed after signing in.

Hide

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:

Hide

News

2011-03-12 - Confoo 2011 presentation
Slides are available from the commandlinefu presentation at Confoo 2011: http://presentations.codeinthehole.com/confoo2011/
2011-01-04 - Moderation now required for new commands
To try and put and end to the spamming, new commands require moderation before they will appear on the site.
2010-12-27 - Apologies for not banning the trolls sooner
Have been away from the interwebs over Christmas. Will be more vigilant henceforth.
2010-09-24 - OAuth and pagination problems fixed
Apologies for the delay in getting Twitter's OAuth supported. Annoying pagination gremlin also fixed.
Hide

Tags

Hide

Functions

Commands tagged hidden from sorted by
Terminal - Commands tagged hidden - 11 results
du --max-depth=1 -h * |sort -h -k 1 |egrep '(M|G)\s'
2013-02-14 08:56:56
User: TerDale
Functions: du egrep sort
1

Enhanced version: fixes sorting by human readable numbers, and filters out non MB or GB entries that have a G or an M in their name.

ls -a | du --max-depth=1 -h 2>/dev/null |sort -h
du --max-depth=1 -h * |sort -n -k 1 |egrep 'M|G'
alias ls='if [[ -f .hidden ]]; then while read l; do opts+=(--hide="$l"); done < .hidden; fi; ls --color=auto "${opts[@]}"'
2012-08-12 13:10:23
User: expelledboy
Functions: alias ls read
Tags: hidden ls alias
1

Sometimes I would like to see hidden files, prefix with a period, but some files or folders I never want to see (and really wish I could just remove all together).

exiftool '-comment<=ubuntu-11.10-alternate-i386.iso.torrent' hello.jpg
set list / set nolist
for p in `ps L|cut -d' ' -f1`;do echo -e "`tput clear;read -p$p -n1 p`";ps wwo pid:6,user:8,comm:10,$p kpid -A;done
2

While going through the source code for the well known ps command, I read about some interesting things.. Namely, that there are a bunch of different fields that ps can try and enumerate for you. These are fields I was not able to find in the man pages, documentation, only in the source.

Here is a longer function that goes through each of the formats recognized by the ps on your machine, executes it, and then prompts you whether you would like to add it or not. Adding it simply adds it to an array that is then printed when you ctrl-c or at the end of the function run. This lets you save your favorite ones and then see the command to put in your .bash_profile like mine at : http://www.askapache.com/linux-unix/bash_profile-functions-advanced-shell.html

Note that I had to do the exec method below in order to pause with read.

t ()

{

local r l a P f=/tmp/ps c='command ps wwo pid:6,user:8,vsize:8,comm:20' IFS=' ';

trap 'exec 66

exec 66 $f && command ps L | tr -s ' ' >&$f;

while read -u66 l >&/dev/null; do

a=${l/% */};

$c,$a k -${a//%/} -A;

yn "Add $a" && P[$SECONDS]=$a;

done

}

find ~/Desktop/ \( -regex '.*/\..*' \) -print -exec rm -Rf {} \;
cp ./* .[!.]* ..?* /path/to/dir
2009-03-16 13:27:36
User: ako
Functions: cp
0

./* is for copying files starting with -

.[!.]* is for copying hidden files and avoiding copying files from the parent directory.

..?* is for copying files starting with .. (avoids the directory ..)

/path/to/dir the path to the directory where the files should be copied

Can also be used as a script. Input argument is /path/to/dir

in tcsh, replace .[!.]* with .[^.]*

alias lh='ls -a | egrep "^\."'
du -cs * .[^\.]* | sort -n
2009-03-02 18:43:48
User: cemsbr
Functions: du sort
9

Very useful when you need disk space. It calculates the disk usage of all files and dirs (descending them) located at the current directory (including hidden ones). Then sort puts them in order.