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Terminal - All commands - 11,928 results
[[ test_condition ]] && if_true_do_this || otherwise_do_that
2009-02-20 21:45:21
User: stallmer
24

instead of writing:

if [[ "$1" == "$2" ]]; then

echo "$1 is equal $2"

else

echo "$1 differs from $2"

fi

do write:

[[ "$1" == "$2" ]] && echo "$1 is equal $2" || echo "$1 differs from $2"

ps aux | awk '/name/ {print $2}'
2009-02-20 21:35:52
User: evil_otto
Functions: awk ps
-5

This finds a process id by name, but without the extra grep that you usually see. Remember, awk can grep too!

egrep 'string1|string2' file
2009-02-20 20:41:33
User: jcgam69
Functions: egrep
0

search file for string1 or string2

lsof -i :80
type "C:\Program Files\Common Files\Symantec Shared\VirusDefs\definfo.dat"
reg query HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\SNMP\Parameters\ValidCommunities
type C:\WINNT\system32\inetsrv\MetaBase.xml | find "DEBUG"
type C:\WINNT\system32\inetsrv\MetaBase.xml | find "400" | find "CustomError"
while [ 1 ]; do curl -s -u username:password http://twitter.com/statuses/friends_timeline.rss|grep title|sed -ne 's/<\/*title>//gp' | head -n 6 |festival --tts; sleep 300;done
2009-02-20 20:20:21
User: tomwsmf
Functions: head sleep
9

Pump up the chatter, run this script on a regular basis to listen to your twitter timeline.

This is a rough first cut using several cli clips I have spotted around. There is no facility to not read those things already read to you. This could also easily be put in a loop for timed onslaught from the chatterverse, though I think it might violate several pointsof the Geneva Convention

UPDATE - added a loop, only reads the first 6 twits, and does this every 5 mins.

say -v Vicki "Hi, I'm a mac"
2009-02-20 20:17:00
User: chrisclymer
9

Very entertaining when run on someone elses machine remotely ;)

date "+The time is %H:%M" | say
2009-02-20 20:14:53
User: las3rjock
Functions: date
0

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 )

rsync -Pz user@remotehost:/path/file.dat .
touch balls
sed 's/[ \t]*$//' < emails.txt | tr 'A-Z' 'a-z' | sort | uniq > emails_sorted.txt
iptables -nL -v --line-numbers
netstat -tap | grep mysql
fortune -o | espeak
2009-02-20 19:46:23
User: danlangford
1

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

netstat -alnp | grep ::80
find . -type d -execdir du -sh '{}' ';' | grep -E "[0-9]+K" | sed 's/^[0-9\.]\+K[\t ]\+//' | tr "\n" "\0" | xargs -0 rm -rf
last reboot
ps -eo stat,pid,user,command | egrep "^STAT|^D|^R"
2009-02-20 19:00:17
User: jyoder
Functions: egrep ps
4

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"

!previous_command
2009-02-20 18:07:03
User: jcgam69
-4

Only a few characters of the previous command are necessary.

tcpdump -nn -v -i eth0 -s 1500 -c 1 'ether[20:2] == 0x2000'
2009-02-20 18:02:27
User: spif
Functions: tcpdump
15

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

ctrl-t
2009-02-20 17:38:49
User: betsubetsu
21

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

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

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.