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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!

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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

Commands using sudo from sorted by
Terminal - Commands using sudo - 442 results
sudo /etc/acpi/sleep.sh sleep
2010-08-03 23:54:49
User: jmfork
Functions: sudo
Tags: sleep suspend

It suspends to RAM: you always need your batteries for the RAM but it saves time as there is no need to slowly archive everything on your hard disk.

It works fine with me but if anyone has a nicer way, please contribute.

sudo ethtool -s eth0 wol d
sudo ls -l $(eval echo "/proc/{$(echo $(pgrep java)|sed 's/ /,/')}/fd/")|grep log|sed 's/[^/]* //g'|xargs -r tail -f
2010-07-30 18:20:00
User: vutcovici
Functions: echo eval grep ls sed sudo tail xargs

Tail all logs that are opened by all java processes. This is helpful when you are on a new environment and you do not know where the logs are located. Instead of java you can put any process name. This command does work only for Linux.

The list of all log files opened by java process:

sudo ls -l $(eval echo "/proc/{$(echo $(pgrep java)|sed 's/ /,/')}/fd/")|grep log|sed 's/[^/]* //g'
sudo dd if=/dev/sdc bs=4096 | pv -s 2G | sudo dd bs=4096 of=~/USB_BLACK_BACKUP.IMG
2010-07-28 22:39:46
User: BruceLEET
Functions: dd sudo

This command utilizes 'pv' to show dd's progress.

Notes on use with dd:

-- dd block size (bs=...) is a widely debated command-line switch and should usually be between 1024 and 4096. You won't see much performance improvements beyond 4096, but regardless of the block size, dd will transfer every bit of data.

-- pv's switch, '-s' should be as close to the size of the data source as possible.

-- dd's out file, 'of=...' can be anything as the data within that file are the same regardless of the filename / extension.

sudo iptables -L -nv
sudo dpkg-reconfigure -a
for i in {a..z};do sudo rm /usr/share/doc/$i*/*;done
2010-07-23 01:52:25
User: LinuxMan
Functions: rm sudo

Never read the documentation? No, then why have that ~ 20 MB sit there and take up space? This command preserves directory structure wile removing all of those unnecessary help and documentation files. Works on Ubuntu, Debian, and most related systems. Gives a lot of directory errors, I'll fix those later.

sudo ping -f -c 999 -s 4500 target.com
2010-07-11 16:38:44
User: gunslinger_
Functions: ping sudo
Tags: ping

sending packet by ping

if sending more high packet root needed...

sudo lsof|sed 's/ */ /g'|cut -f3 -d' '|sort -u
2010-07-07 08:20:28
User: binaryten
Functions: cut sed sort sudo

Most systems (at least my macbook) have system users defined, such as _www and using "users" for example will not list them. This command allows you to see who the 'virtual' users are on your system.

goburncd() { d=/tmp/goburncd_$RANDOM; mkdir $d && for i in *.[Mm][Pp]3; do lame --decode "$i" "$d/${i%%.*}.wav"; done; sudo cdrecord -pad $d/* && rm -r $d; eject }
2010-07-06 21:58:10
User: meathive
Functions: cdrecord eject mkdir rm sudo

My variation on an audio burning command from commandlinefu - this one doesn't crap out if you want to burn a CD in a directory whose permissions don't allow it, and instead rips everything to /tmp. If you mount your music partition like I do using Samba, you probably don't have write permission inside that file system in order to create the temporary directory other audio burning commands here use. Not a bad idea to add cdrom to your groups, and /bin/eject with visudo.

qlist --exact "$pkg" | sudo scanelf --needed --quiet --format '%n#F' | tr ',' '\n' | sort -u | qfile --from -
2010-07-06 14:39:15
User: Flameeyes
Functions: sort sudo tr

The output is only partial because runtime dependencies should count in also commands executed via system() and libraries loaded with dlopen(), but at least it gives an idea of what a package directly links to.

Note: this is meaningful *only* if you're using -Wl,--as-needed in your LDFLAGS, otherwise it'll bring you a bunch of false positives.

sudo arp-scan -I eth0
sudo find . -maxdepth 1 -cnewer olderFilesNameToMove -and ! -cnewer newerFileNameToMove -exec mv -v {} /newDirectory/ \;
2010-06-30 20:40:30
User: javamaniac
Functions: find mv sudo

In a folder with many files and folders, you want to move all files where the date is >= the file olderFilesNameToMove and

proceed_sudo () { sudor_command="`HISTTIMEFORMAT=\"\" history 1 | sed -r -e 's/^.*?sudor//' -e 's/\"/\\\"/g'`" ; sudo sh -c "$sudor_command"; }; alias sudor="proceed_sudo # "
2010-06-29 14:56:29
User: mechmind
Functions: alias sh sudo
Tags: history sudo

USAGE: $ sudor your command

This command uses a dirty hack with history, so be sure you not turned it off.


This command behavior differ from other commands. It more like text macro, so you shouldn't use it in subshells, non-interactive sessions, other functions/aliases and so on. You shouldn't pipe into sudor (any string that prefixes sudor will be removed), but if you really want, use this commands:

proceed_sudo () { sudor_command="`HISTTIMEFORMAT=\"\" history 1 | sed -r -e 's/^.*?sudor//' -e 's/\"/\\\"/g'`" ; pre_sudor_command="`history 1 | cut -d ' ' -f 5- | sed -r -e 's/sudor.*$//' -e 's/\"/\\\"/g'`"; if [ -n "${pre_sudor_command/ */}" ] ; then eval "${pre_sudor_command%| *}" | sudo sh -c "$sudor_command"; else sudo sh -c "$sudor_command" ;fi ;}; alias sudor="proceed_sudo # "
sudo -s "echo 1 > /proc/sys/net/ipv4/icmp_echo_ignore_all"
2010-06-22 19:16:43
User: sliceoflinux
Functions: sudo
Tags: ping icmp

It really disables all ICMP responses not only the ping one.

If you want to enable it you can use:

sudo -s "echo 0 > /proc/sys/net/ipv4/icmp_echo_ignore_all"
dpkg-query -l > 1.lst; sudo apt-get install -y build-essential; ./configure; make; sudo checkinstall -D make install; dpkg-query --list > 2.lst; diff 1.lst 2.lst | grep '^>' | awk '{print $3}' | xargs sudo apt-get remove -y --purge
2010-06-16 22:06:07
User: danlangford

on a dpkg managed system this PATTERN will help you generate .deb files from source AND remove all the dev libs you had to install. i hate cluttering up my machine with rouge packages and headers.

it would be pretty darn easy on rpm systems as well. i just dont have a rpm managed system to test on right now.

NOTE, you sharp ones will notice that it uninstalls the deb you just made! yeah, but the deb is still there to do with it what you want, like re install it. or you can just grep -v after the diff

sudo lsof -u someuser -a +D /etc
2010-06-11 06:37:27
User: zlemini
Functions: sudo

View all files opened by a user in specified directory.

The +D option makes lsof search all sub-directories to complete depth, while ignoring symbolic links.

dpkg -l 'linux-*' | sed '/^ii/!d;/'"$(uname -r | sed "s/\(.*\)-\([^0-9]\+\)/\1/")"'/d;s/^[^ ]* [^ ]* \([^ ]*\).*/\1/;/[0-9]/!d' | xargs sudo apt-get -y purge
2010-06-10 20:33:32
User: mitzip
Functions: sed sudo xargs

This will remove all installed kernels on your debian based install, except the one you're currently using.



sudo lvdisplay |awk '/LV Name/{blockdev=$3} /Block device/{bdid=$3; sub("[0-9]*:","dm-",bdid); print bdid,blockdev;}'
2010-06-10 11:50:31
Functions: awk sudo
Tags: awk lvm

Emits the device names which will be printed by iostat for an LVM volume; doesn't show the names for the underlying devices when snapshots are being used (the -cow and -real devices in /dev/mapper)

sudo vconfig add eth0 [VID]
2010-05-15 21:32:24
User: leovailati
Functions: sudo
Tags: sudo vconfig

Great for sysadmins! Don't forget to pass the vlan to your port in a manageable switch.

After vconfig, you should use

sudo ifconfig eth0.[VID] up

Now the interface is up, you can use dhclient or ifconfig again to get an ip address.

pgrep rouge-process | xargs sudo kill -9
2010-05-09 22:30:05
User: mheadd
Functions: kill sudo xargs
Tags: xargs pgrep

Find and kill multiple instances of a process with one simple command.

sudo usermod -p $(mkpasswd '') user_id
2010-05-06 20:39:58
User: ckclark
Functions: sudo usermod

It is safe when there is

"PermitEmptyPasswords no"

in /etc/ssh/sshd_config.

This command is useful when there is no need to have a password.

echo "savedefault --default=2 --once" | grub --batch; sudo reboot
2010-05-02 03:06:23
User: matthewbauer
Functions: echo sudo
Tags: grub Reboot os

This will reboot as the Grub 2 option.

sudo powertop
2010-04-19 21:59:29
User: rkulla
Functions: sudo

Run this command as root to get enough stats. It works on AMD and Intel machines, including desktops. If ran on a laptop it'll give you suggestions on extending your battery life.

You'll need to install PowerTOP if you don't have, via 'apt-get install powertop', etc.

To grep the output use: sudo powertop -d | grep ...

The many command suggestions PowerTOP gives you alone will increase your command-line fu!

APP=wine; if [ $(sudo apt-get --print-uris -y install $APP | sed -ne 's/^After this operation, \([0-9]\{1,\}\).*MB.*/\1/p') -gt 50 ]; then gnometris 2>/dev/null & sudo apt-get install $APP; else sudo apt-get install $APP; fi
2010-04-18 19:32:26
User: rkulla
Functions: install sed sudo

Change the APP variable's value to whatever you want to install. Depending on how fast your machine is, you'll want to adjust the value 50 to something else. You might also want to play a different game than Gnometris - just make sure it's a GUI game.