Commands by pepin

Commands by pepin (10)

sorted by

CLFUContest : Check which process consume more than 10% of the cpu (configurable)
This is sample output - yours may be different.
1

pidstat -t | sed 's/,/./4' | awk -v seuil='10.0' '{if (NR>3 && $8>seuil) print }'

pepin · 2015-09-19 07:41:31 7
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 7
Batch file suffix renaming

of course, replace the "-" after / by the character you wish. a dot must by protected by a backslash, as it is a regexp. it's the same result as the command proposed. but if there is more than a dash in the name, only the part before the first dash is kept... so that's not an "extension renaming" command.
This is sample output - yours may be different.
-2

rename -n "s/-.*//" *

pepin · 2011-03-06 12:08:39 4
Numerate files, rename files in a directory by incremental number
This is sample output - yours may be different.
-5

declare -i i=0 ; for file in * ; do i=$[$i+1] ; mv "$file" $i; done

pepin · 2010-08-26 12:40:58 2
delete all leading and trailing whitespace from each line in file
This is sample output - yours may be different.
1

sed 's/^[ \t]*//;s/[ \t]*$//' -i file

pepin · 2010-08-23 22:02:24 4
Find files and list them with a readable informative output
This is sample output - yours may be different.
-3

find . -type f | sed 's,.*,stat "&" | egrep "File|Modify" | tr "\\n" " " ; echo ,' | sh | sed 's,[^/]*/$.*$. Modify: $....-..-.. ..:..:..$.*,\2 \1,' | sort

pepin · 2010-05-27 22:30:18 2
Kill multiple instances of a running process
This is sample output - yours may be different.
2

killall -9 rouge-process

pepin · 2010-05-09 22:41:22 3

Reconstruct a malformed authorizated_keys for ssh

when someone mail you his ssh public key, and the lines are broken with '\n', you can reconstruct a new file with one key by line with this command. Show Sample Output

pepin · 2010-02-19 08:32:35 2

rename all jpg files with a prefix and a counter
This is sample output - yours may be different.
3

ls *.jpg | grep -n "" | sed 's,.*,0000&,' | sed 's,0*$...$:$.*$.jpg,mv "\2.jpg" "image-\1.jpg",' | sh

pepin · 2010-02-16 23:59:28 2
Count files created by date/modification
This is sample output - yours may be different.
0

find . -type f -exec stat \{\} \; | grep Modify: | awk '{a[$2]++}END{for(i in a){print i " : " a[i] }}' | sort

pepin · 2010-01-23 07:55:16 5

What's this?

commandlinefu.com is the place to record those command-line gems that you return to again and again. 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.

Share Your Commands

Check These Out

Scan for [samba|lanman] NetBIOS names and ip addresses in LAN by ARP.

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"

create shortcut keys in bash

use screen as a terminal emulator to connect to serial consoles

Use GNU/screen as a terminal emulator for anything serial console related. screen /dev/tty eg. screen /dev/ttyS0 9600 MacOSX: http://www.macosxhints.com/article.php?story=20061109133825654 Cheat Sheet: http://www.catonmat.net/blog/screen-terminal-emulator-cheat-sheet/

history autocompletion with arrow keys

This will enable the possibility to navigate in the history of the command you type with the arrow keys, example "na" and the arrow will give all command starting by na in the history.You can add these lines to your .bashrc (without &&) to use that in your default terminal.

Output Detailed Process Tree for any User

An easy function to get a process tree listing (very detailed) for all the processes of any gived user. This function is also in my http://www.askapache.com/linux-unix/bash_profile-functions-advanced-shell.html

Command to rename multiple file in one go

list with full path

List the full path of some files. You can add ".*" on the end if you want to display hidden files.

Print stack trace of a core file without needing to enter gdb interactively

This does almost the same thing as the original, but it runs the full backtrace for _all_ the threads, which is pretty important when reporting a crash for a multithreaded software, since more often than not, the signal handler is executed in a different thread than the crash happened.

Get MD5 checksum from a pipe stream and do not alter it

Stay in the loop…

Follow the Tweets.

Every new command is wrapped in a tweet and posted to Twitter. Following the stream is a great way of staying abreast of the latest commands. For the more discerning, there are Twitter accounts for commands that get a minimum of 3 and 10 votes - that way only the great commands get tweeted.

» http://twitter.com/commandlinefu
» http://twitter.com/commandlinefu3
» http://twitter.com/commandlinefu10

Subscribe to the feeds.

Use your favourite RSS aggregator to stay in touch with the latest commands. There are feeds mirroring the 3 Twitter streams as well as for virtually every other subset (users, tags, functions,…):

Subscribe to the feed for:

» all commands
» commands with 3 up-votes (commandlinefu3)
» commands with 10 up-votes (commandlinefu10)
» commands by pepin