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All commands from sorted by
Terminal - All commands - 11,174 results
say -v Vicki "Hi, I'm a mac"
2009-02-20 20:17:00
User: chrisclymer
9
Up
Down
Get your mac to talk to you

Very entertaining when run on someone elses machine remotely ;)

Comments (2) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
date "+The time is %H:%M" | say
2009-02-20 20:14:53
User: las3rjock
Functions: date
0
Up
Down
Say the current time (Mac OS X)

On other systems, replace 'say' with the name of another text-to-speech engine, e.g. espeak ( http://espeak.sourceforge.net ) or festival ( http://www.cstr.ed.ac.uk/projects/festival )

Comments (2) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
rsync -Pz user@remotehost:/path/file.dat .
2009-02-20 20:13:59
User: DEinspanjer
Functions: rsync
1
Up
Down
Copy a file from a remote server to your local box using on-the-fly compression

-P displays a progress meter

-z tells rsync to use compression

Show sample output | Comments (1) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
touch balls
2009-02-20 19:56:59
User: k1piee
Functions: touch
-24
Up
Down
creates balls
Comments (6) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
sed 's/[ \t]*$//' < emails.txt | tr 'A-Z' 'a-z' | sort | uniq > emails_sorted.txt
2009-02-20 19:49:17
User: jdunn
Functions: sed sort tr uniq
8
Up
Down
Sort a one-per-line list of email address, weeding out duplicates
Comments (1) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
iptables -nL -v --line-numbers
2009-02-20 19:48:11
User: jdunn
Functions: iptables
3
Up
Down
Show current iptables rules, with line numbers
Comments (1) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
netstat -tap | grep mysql
2009-02-20 19:47:06
User: jdunn
Functions: grep netstat
0
Up
Down
Find out if MySQL is up and listening on Linux
Comments (0) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
fortune -o | espeak
2009-02-20 19:46:23
User: danlangford
1
Up
Down
listen to an offensive fortune

or replace "espeak" with "festival --tts" if you like festival better

when your buddy leaves his computer unlocked use "crontab" or "at" to play at some time that would be most embarassing (during his next sales presentation)

echo "fortune -o | espeak" | at now + 30 minutes

of course you can exclude the "-o" for non offensive fortunes, or if you don't have offensive fortunes installed

Comments (1) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
netstat -alnp | grep ::80
2009-02-20 19:45:53
User: jdunn
Functions: grep netstat
2
Up
Down
Show what PID is listening on port 80 on Linux
Comments (1) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
find . -type d -execdir du -sh '{}' ';' | grep -E "[0-9]+K" | sed 's/^[0-9\.]\+K[\t ]\+//' | tr "\n" "\0" | xargs -0 rm -rf
2009-02-20 19:44:49
User: jdunn
Functions: du find grep rm sed tr xargs
0
Up
Down
Remove all directories less than 1 MB in size in or below current directory
Comments (0) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
last reboot
2009-02-20 19:21:40
User: jyoder
Functions: last
3
Up
Down
Find out the last times your system was rebooted (for the duration of wtmp).
Show sample output | Comments (1) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
ps -eo stat,pid,user,command | egrep "^STAT|^D|^R"
2009-02-20 19:00:17
User: jyoder
Functions: egrep ps
4
Up
Down
Find the processes that are on the runqueue. Processes with a status of

Want to know why your load average is so high? Run this command to see what processes are on the run queue. Runnable processes have a status of "R", and commands waiting on I/O have a status of "D".

On some older versions of Linux may require -emo instead of -eo.

On Solaris: ps -aefL -o s -o user -o comm | egrep "^O|^R|COMMAND"

Show sample output | Comments (0) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
!previous_command
2009-02-20 18:07:03
User: jcgam69
-4
Up
Down
run a previous command

Only a few characters of the previous command are necessary.

Comments (5) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
tcpdump -nn -v -i eth0 -s 1500 -c 1 'ether[20:2] == 0x2000'
2009-02-20 18:02:27
User: spif
Functions: tcpdump
15
Up
Down
Get Cisco network information

This gives you lots of nifty Cisco network information like VLAN tag, port and switch information.

Show sample output | Comments (2) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
ctrl-t
2009-02-20 17:38:49
User: betsubetsu
19
Up
Down
Switch 2 characters on a command line.

If you typed 'sl', put the cursor on the 'l' and hit ctrl-t to get 'ls'.

Comments (0) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
yes 'Y'|gdb -ex 'p close(1)' -ex 'p creat("/tmp/output.txt",0600)' -ex 'q' -p pid
2009-02-20 17:36:57
User: adminzim
Functions: yes
7
Up
Down
Redirect a filehandle from a currently running process.

This command uses the debugger to attach to a running process, and reassign a filehandle to a file.

The two commands executed in gdb are

p close(1) which closes STDOUT

and

p creat("/tmp/filename",0600)

which creates a file and opens it for output. Since file handles are assigned

sequentially, this command opens the file in place of STDOUT and once the process continues, new output to STDOUT will instead be written to our capture file.

Show sample output | Comments (4) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
who am i
2009-02-20 16:26:11
User: ozymandias
Functions: who
-18
Up
Down
find out who you logged onto the machine as -- and not just who you are now

In my work environment, we log onto the servers as our user ('user', in the sample ouput), and 'sudo su - root' to other accounts. This trick allows us to return the account name we logged in as -- and not the account name we currently are ('root', in this example).

Using this trick, you can build other commands:

Set your CVSROOT env variable to your account name:

CVSROOT=$(who am i | awk '{print $1}')@cvs.server.example.com:/cvsroot

SCP a file to another server:

scp file.txt $(who am i | awk '{print $1}')@some.other.server.com:.

This works out great in my environment, as we can include this in our documentation and make the comands more easy to copy/paste for different users, and not have to set all sorts of variables, or modify the docs for each user.

whoami gives you the name of the user you currently are, not the user you logged on originally as.

who gives you a listing of every single person logged onto the server.

who am i gives you the name of the user you logged on as, and not who you changed to with su.

Look at the following scenario:

whoami

user

su -

# whoami

root

# who am i

user pts/51 2009-02-13 10:24 (:0.0)

whoami != who am i

Show sample output | Comments (9) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
curl -u USERNAME:PASSWORD -d "" http://twitter.com/friendships/create/NAMEOFNEWFRIEND.xml?follow=true
2009-02-20 14:30:57
User: reklis
1
Up
Down
Follow a new friend on twitter

replace username, password, and nameofnewfriend with proper values. Remember to escape things like ! or & in your password

Comments (1) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
echo "hello world" | festival --tts
2009-02-20 14:00:50
User: jacquesloonen
Functions: echo
7
Up
Down
Synthesize text as speech

The Festival Speech Synthesis System converts text into sound.

Or: links -dump http://youfavoritewebsite.com | festival --tts

Show sample output | Comments (1) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
ctrl + r
2009-02-20 13:28:19
User: sixtus
6
Up
Down
Search previous commands from your .bash_history

This is not actually a command, it's just a keyboard shortchut. But a very useful one.

Show sample output | Comments (1) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
find / -name *~ -delete
2009-02-20 13:15:23
User: lfamorim
Functions: find
3
Up
Down
Remove Backup Files

Remove all text backup files.

Show sample output | Comments (1) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
pushd +2; pushd -2
2009-02-20 12:26:18
User: betsubetsu
1
Up
Down
pushd rotates the stack so that the second directory comes at the top.

'pushd +1' is equivalent to 'pushd'. Can be 'pushd +3' or more generaly 'pushd +N'. Can also be 'pushd -N'.

More description in 'man bash'.

Show sample output | Comments (0) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
FLOOR=0; RANGE=10; number=0; while [ "$number" -le $FLOOR ]; do number=$RANDOM; let "number %= $RANGE"; done; echo $number
2009-02-20 09:33:56
User: raphink
Functions: echo
Tags: bash
-1
Up
Down
Random integer number between FLOOR and RANGE

This one-liner outputs a random number between the values given for FLOOR and RANGE.

Show sample output | Comments (2) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
xset b off
2009-02-20 07:40:14
User: dizzgo
7
Up
Down
Mute xterm

Disable the annoying beep in xterm

Comments (0) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
<alt> + <print screen/sys rq> + <R> - <S> - <E> - <I> - <U> - <B>
2009-02-20 07:28:56
User: dizzgo
94
Up
Down
Reboot machine when everything is hanging

If the machine is hanging and the only help would be the power button, this key-combination will help to reboot your machine (more or less) gracefully.

R - gives back control of the keyboard

S - issues a sync

E - sends all processes but init the term singal

I - sends all processes but init the kill signal

U - mounts all filesystem ro to prevent a fsck at reboot

B - reboots the system

Save your file before trying this out, this will reboot your machine without warning!

http://en.wikipedia.org/wiki/Magic_SysRq_key

Comments (10) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate