Commands using awk sorted by votes

Commands using awk (1,418)

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netstat -p recoded (totaly useless..)

Ok so it's rellay useless line and I sorry for that, furthermore that's nothing optimized at all... At the beginning I didn't managed by using netstat -p to print out which process was handling that open port 4444, I realize at the end I was not root and security restrictions applied ;p It's nevertheless a (good ?) way to see how ps(tree) works, as it acts exactly the same way by reading in /proc So for a specific port, this line returns the calling command line of every thread that handle the associated socket
This is sample output - yours may be different.
-5

p=$(netstat -nate 2>/dev/null | awk '/LISTEN/ {gsub (/.*:/, "", $4); if ($4 == "4444") {print $8}}'); for i in $(ls /proc/|grep "^[1-9]"); do [[ $(ls -l /proc/$i/fd/|grep socket|sed -e 's|.*\[$.*$\]|\1|'|grep $p) ]] && cat /proc/$i/cmdline && echo; done

j0rn · 2009-04-30 12:39:48 639
Kill a daemon by name, not by PID

Just find out the daemon with $ netstat -atulpe. Then type in his name and he gets the SIGTERM.
This is sample output - yours may be different.
-5

kill_daemon() { echo "Daemon?"; read dm; kill -15 $(netstat -atulpe | grep $dm | cut -d '/' -f1 | awk '{print $9}') }; alias kd='kill_daemon

P17 · 2009-05-26 20:39:56 7
To print a specific line from a file

I don't know if it's better but works fine :)
This is sample output - yours may be different.
-5

awk '{if (NR == 3) print}' <file>

yooreck · 2009-10-19 15:58:09 5
search for and kill a process in one blow
This is sample output - yours may be different.
-5

ps aux|grep -i [p]rocessname|awk '{ print $2 }'|xargs kill

billcarroll · 2010-04-10 18:42:27 17
How many lines does the passwd file have?
This is sample output - yours may be different.
-5

awk 'END {print NR}' /etc/passwd

Leo_Gutierrez · 2011-06-23 00:33:40 3
Print only the odd lines of a file
This is sample output - yours may be different.
-6

awk '{if (NR % 2 == 1) print $0}' file.txt

twopoint718 · 2009-02-05 18:43:19 24
Check if Fail2Ban is Running

Check if Fail2Ban is running on the system and alert it with a message in the terminal Show Sample Output
This is sample output - yours may be different.
```
[INFO] Fail2Ban is not running

or:

[INFO] Fail2Ban is running and the PID is 3557
```
-6

FAIL2BAN=`ps ax | grep fail2ban | grep -v grep | awk {'print $1'}` && if [ -n "$FAIL2BAN" ]; then printf "\n[INFO] Fail2Ban is running and the PID is %s\n\n" $FAIL2BAN; else printf "\n [INFO] Fail2Ban is not running\n\n"; fi

fmdlc · 2009-02-11 04:36:49 8
kill some pids without specific pid

search_criteria = what do you want to kill pid = pid of you dont kill
This is sample output - yours may be different.
-6

kill -9 `ps aux | grep "search_criteria" | awk '{if ($2 != pid) print $2}'`

ozgurkuru · 2010-09-16 08:52:59 6
Kill any process with one command using program name

Removed unneeded grep -v by making the initial grep unable to match itself.
This is sample output - yours may be different.
-6

ps -ef | grep [j]boss | awk '{print $2}'|xargs kill -9

utoxin · 2010-09-30 15:55:41 3
get LAN ip

get the ip address on your LAN Show Sample Output
This is sample output - yours may be different.
```
192.168.1.102
```
-6

ifconfig |grep broadcast | awk '{print $2}'

fotoflo · 2012-12-05 03:57:46 4
ps -ef | grep PROCESS | grep -v grep | awk '{system "kill -9" $2}
This is sample output - yours may be different.
-6

ps -ef | grep PROCESS | grep -v grep | awk '{system "kill -9" $2}

pepin · 2015-03-21 21:25:07 11
This is a nice way to kill processes.. the example below is for firefox!!! substitute firefox for whatever the process name is...

This is a nice way to kill processes.. the example here is for firefox!!! substitute firefox for whatever the process name is... Show Sample Output
This is sample output - yours may be different.
```
kill -9 7491 
kill -9 7506 
kill -9 7434 
kill -9 7532
```
-7

ps aux | grep -i firefox | grep -v grep | awk '{print $2}' | xargs -t -i kill -9 {}

blackdude · 2009-02-19 18:50:00 11
kill all instances of an annoying or endless, thread-spawning process
This is sample output - yours may be different.
-7

ps auxwww | grep outofcontrolprocess | awk '{print $9}' | xargs kill -9

fpater · 2009-02-20 21:49:38 6
Kill all processes matching a given name

This command kills all processes with 'SomeCommand' in the process name. There are other more elegant ways to extract the process names from ps but they are hard to remember and not portable across platforms. Use this command with caution as you could accidentally kill other matching processes! xargs is particularly handy in this case because it makes it easy to feed the process IDs to kill and it also ensures that you don't try to feed too many PIDs to kill at once and overflow the command-line buffer. Note that if you are attempting to kill many thousands of runaway processes at once you should use 'kill -9'. Otherwise the system will try to bring each process into memory before killing it and you could run out of memory. Typically when you want to kill many processes at once it is because you are already in a low memory situation so if you don't 'kill -9' you will make things worse
This is sample output - yours may be different.
-7

ps axww | grep SomeCommand | awk '{ print $1 }' | xargs kill

philiph · 2009-02-28 17:48:51 11
Pretty print output of

Show Sample Output
This is sample output - yours may be different.
```
1:
root
3410
00:00:00
gpm -m /dev/input/mice -t exps2

2:
root
3424
00:00:00
crond

3:
root
3488
00:00:00
/usr/sbin/atd
```
-8

ps -ef | awk -v OFS="\n" '{ for (i=8;i<=NF;i++) line = (line ? line FS : "") $i; print NR ":", $1, $2, $7, line, ""; line = "" }'

djangofan · 2012-12-04 15:59:53 9
send Everyone on your machine some love

This works just like write or wall ... cept one thing the sender is anonymous ... if you really want to drive everyone insane replace echo \"The Matrix has you...\" with cat /dev/urandom nice one to do on April fool's day Show Sample Output
This is sample output - yours may be different.
```
The Matrix has you... (on all writable ttys)
```
-12

w | egrep -v '(load|FROM)' | awk '{print $2}' | sed 's/^/tty/' | awk '{print "echo \"The Matrix has you...\" >> /dev/" $1}' | bash

copremesis · 2009-04-29 22:04:56 10
get LAN ip

get the ip address on your LAN Show Sample Output
This is sample output - yours may be different.
```
192.168.1.102
```
-12

ifconfig |grep broadcast | awk '{print $2}'

fotoflo · 2012-12-05 03:57:51 9
for i in $(grep 'mystring' myfile1)|awk '{print $1}'); do grep $1 myfile2;done
This is sample output - yours may be different.
-14

for i in $(grep 'mystring' myfile1)|awk '{print $1}'); do grep $1 myfile2;done

msh · 2011-03-15 16:18:29 5
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Short one line while loop that outputs parameterized content from one file to another

The above is an example of grabbing only the first column. You can define the start and end points specifically by chacater position using the following command: $ while read l; do echo ${l:10:40}; done < three-column-list.txt > column-c10-c40.txt Of course, it doesn't have to be a column, or extraction, it can be replacement $ while read l; do echo ${l/foo/bar}; done < list-with-foo.txt > list-with-bar.txt Read more about parameter expansion here: http://wiki.bash-hackers.org/syntax/pe Think of this as an alternative to awk or sed for file operations

Which processes are listening on a specific port (e.g. port 80)

swap out "80" for your port of interest. Can use port number or named ports e.g. "http"

show git logging

shows some logging for the git repo.

Search commandlinefu from the command line

There's probably a more efficient way to do this rather than the relatively long perl program, but perl is my hammer, so text processing looks like a nail. This is of course a lot to type all at once. You can make it better by putting this somewhere: $ clf () { (curl -d "q=$@" http://www.commandlinefu.com/search/autocomplete 2>/dev/null) | egrep 'autocomplete|votes|destination' | perl -pi -e 's/$/\n\n/g;s/^ +|\([0-9]+ votes,//g;s/^\//http:\/\/commandlinefu.com\//g'; } Then, to look up any command, you can do this: $ clf diff This is similar to http://www.colivre.coop.br/Aurium/CLFUSearch except that it's just one line, so more in the spirit of CLF, in my opinion.

Set laptop display brightness

Run as root. Path may vary depending on laptop model and video card (this was tested on an Acer laptop with ATI HD3200 video). $ cat /proc/acpi/video/VGA/LCD/brightness to discover the possible values for your display.

Mysql extended status

Useful when checking MySQL status.

save man-page as pdf

check open ports without netstat or lsof

Advanced python tracing

Trace python statement execution and syscalls invoked during that simultaneously

edit, view or execute last modified file with a single key-press

Copy this function to command line, press 'Enter' 'f'' 'Enter' to execute (sentence on the left written only for newbies). Hint 'e|x|v|1..9' in front of displayed last modified file name means: "Press 'e' for edit,'x' for execute,'v' for view or a digit-key '1..9' to touch one file from the recent files list to be last modified" and suggested (hidden files are listed too, else remove 'a' from 'ls -tarp' statement if not intended). If you find this function useful you can then rename it if needed and append or include into your ~/.bashrc config script. With the command $ . ~/.bashrc the function then can be made immediately available. In the body of the function modifications can be made, i.e. replaced joe editor command or added new option into case statement, for example 'o) exo-open $h;;' command for opening file with default application - or something else (here could not be added since the function would exceed 255 chars). To cancel execution of function started is no need to press Ctrl-C - if the mind changed and want to leave simple Enter-press is enough. Once defined, this function can with $ typeset -f f command be displayed in easy readable form

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Commands using awk (1,418)

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