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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.

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May 19, 2015 - A Look At The New Commandlinefu
I've put together a short writeup on what kind of newness you can expect from the next iteration of clfu. Check it out here.
March 2, 2015 - New Management
I'm Jon, I'll be maintaining and improving clfu. Thanks to David for building such a great resource!

Top Tags



Psst. Open beta.

Wow, didn't really expect you to read this far down. The latest iteration of the site is in open beta. It's a gentle open beta-- not in prime-time just yet. It's being hosted over at UpGuard (link) and you are more than welcome to give it a shot. Couple things:

  • » The open beta is running a copy of the database that will not carry over to the final version. Don't post anything you don't mind losing.
  • » If you wish to use your user account, you will probably need to reset your password.
Your feedback is appreciated via the form on the beta page. Thanks! -Jon & CLFU Team

All commands from sorted by
Terminal - All commands - 12,363 results
touch .tardis; the command ; find . -newer .tardis; rm .tardis;
2015-10-15 19:18:54
User: BeniBela
Functions: command find rm touch

This lists all files modified after calling some command using a temporal anchor.

# journalctl -u sshd --no-pager # display sshd log entries
2015-10-15 08:48:47
User: mpb
Functions: sshd

In pre-systemd systems, something like: "# grep sshd /var/log/messages" would display log events in /var/log/messages containing "sshd".

# journalctl -u sshd --no-pager

The above command displays similar results for systemd systems.

(Note that this needs to be run with root permissions to access the log data.)

unzip -l files.zip
2015-10-15 07:07:42
User: erez83

View files in ZIP archive

unzip -l files.zip

unzip -j "myarchive.zip" "in/archive/file.txt" -d "/path/to/unzip/to"
2015-10-15 07:06:19
User: erez83

Extract only a specific file from a zipped archive to a given directory

unzip -j "myarchive.zip" "in/archive/file.txt" -d "/path/to/unzip/to"

unzip /surce/file.zip -d /dest/
bg; jobs; fg
2015-10-14 17:33:25
User: djangofan
Functions: bg


# suspend process


# background process


# list all backgrounded jobs


# bring it back to foreground


ssh(){ L="\$HOME/logs/$(date +%F_%H:%M)-$USER";/usr/bin/ssh -t "$@" "mkdir -p \"${L%/*}\";screen -xRRS $USER script -f \"$L\"";}
2015-10-14 13:14:29
User: flatcap
Functions: ssh

A wrapper around ssh to automatically provide logging and session handling.

This function runs ssh, which runs screen, which runs script.


The logs and the screen session are stored on the server.

This means you can leave a session running and re-attach to it later, or from another machine.




* Log sessions on a remote server

* Transparent - nothing extra to type

* No installation - nothing to copy to the server beforehand



* Function wrapper delegating to ssh

- so nothing to remember

- uses .ssh/config as expected

- passes your command line option to ssh

* Self-contained: no scripts to install on the server

* Uses screen(1), so is:

- detachable

- re-attachable

- shareable

* Records session using script(1)

* Configurable log file location, which may contain variables or whitespace

L="$HOME" # local variable

L="\$HOME" # server variable

L="some space"



* Log dir/file may not contain '~' (which would require eval on the server)



The sessions are named by the local user connecting to the server.

Therefore if you detach and re-run the same command you will reconnect to your original session.

If you want to connect/share another's session simply run:

USER=bob ssh [email protected]


The command above is stripped down to an absolute minimum.

A fully expanded and annotated version is available as a Gist (git pastebin):



If you want to add timing info to script, change the command to:

ssh(){ L="\$HOME/logs/$(date +%F_%H:%M)-$USER";/usr/bin/ssh -t "$@" "mkdir -p \"${L%/*}\";screen -xRRS $USER script --timing=\"$L-timing\" -f \"$L\"";}
cat *.jpg | ffmpeg -f image2pipe -r 1 -vcodec mjpeg -i - -vcodec libx264 out.mp4
wget -O - http://list.iblocklist.com/\?list\=ydxerpxkpcfqjaybcssw\&fileformat\=p2p\&archiveformat\=gz | gunzip > ~/ipfilter.p2p
2015-10-11 13:04:08
User: lordtoran
Functions: gunzip wget

Downloads Bluetack's level 1 IP blocklist in .p2p format, suitable for various Bittorrent clients.

adb shell screencap -p | sed 's/\r$//' > FILENAME.PNG
alias m='screen -S $$ -m script'
2015-10-01 18:07:18
Functions: alias
Tags: screen script

A quick alias I use right before logging into a server so that I have a log of the transactions as well as the ability to re-connect from another computer. Useful for when your boss says "what commands did you run again on that server?" and you had already closed the terminal ;)

I wrapped it in a script now, with more features, but this is the heart of it.

Never leave home without it.

cd ~/.minetest/mods && git clone --recursive https://github.com/$1/$2.git
2015-09-30 19:24:59
User: lordtoran
Functions: cd

Where $1 = author and $2 = mod name

You need to be running a daily build of Minetest (for example from the 'minetestdevs/daily-builds' PPA), or some bleeding edge mods will not work or crash the game.

Update a mod by entering its subdirectory under ~/.minetest/mods and doing

git pull && git submodule update --recursive --remote --init
sudo aa-complain /etc/apparmor.d/usr.bin.chromium-browser
2015-09-30 18:56:28
User: lordtoran
Functions: sudo

If AppArmor is installed with all profiles enforced, Chromium may refuse to start, printing a "failed to launch zygote process" error on stderr.

This command switches the Chromium profile from enforce to complain mode, effectively un-sandboxing the browser, but depending on the system setup it may be a smaller deal than a nonfunctional application.

NSPR_LOG_MODULES=nsHostResolver:5 NSPR_LOG_FILE=/tmp/log.txt /Applications/Firefox.app/Contents/MacOS/firefox
NSPR_LOG_MODULES=nsHostResolver:5 NSPR_LOG_FILE=/tmp/log.txt firefox
dnstop -l 3 enp1s0f0
./mpv_identify.sh * | egrep '^video_aspect=1\.[67]'
2015-09-29 05:47:07
User: Tatsh
Functions: egrep

Checks if the aspect ratio is approximately 1.6 (16:10) or ~1.77777778 (16:9).

Requires mpv_identify from mpv project https://github.com/mpv-player/mpv/blob/master/TOOLS/mpv_identify.sh (this replaces mplayer -identify, or midentify)

pkill imwheel && imwheel &
sudo sh -c "aptitude update; aptitude -DrVWZ full-upgrade; aptitude autoclean; exit"
2015-09-28 23:48:05
User: lordtoran
Functions: sh sudo

This has been my "sysupgrade" alias since ca. 2006, first used on Debian Sid, then Sabayon, and it still does its duty on Mint nowadays without breaking stuff.

pkill plasma-desktop && plasma-desktop
2015-09-28 23:36:24
User: lordtoran

This can help with serious GUI lockups in KDE. It will only restart Plasma + widgets, not your session, so all your programs will stay running.

sudo sh -c "rm /usr/share/mime/packages/kde.xml && update-mime-database /usr/share/mime"
wallpaper -w 800 -x 16384 -a 1.7 -b 1.85 *
2015-09-28 23:18:39
User: lordtoran

List images between 800 and 16384 pixels wide that can be displayed sized and trimmed on a widescreen display.

Requires the "wallpaper" utility.

echo "BTC rate is" $(wget https://api.bitcoinaverage.com/ticker/global/EUR/ -q -O - | jq ".last") "?"
2015-09-28 23:03:59
User: lordtoran
Functions: echo wget
Tags: wget bitcoin jq btc

Returns the global weighted BTC rate in EUR. Requires the "jq" JSON parser.

ps h -o %a 21679
2015-09-27 11:00:07
User: BeniBela
Functions: ps
Tags: Linux ps

Show the command line for a PID with ps

tr '\0' ' ' </proc/21679/cmdline ; echo