LinuxShort
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(Difference between revisions)
(→Usefull short commands) |
(→Usefull short commands) |
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sshd(21736)---bash(21737) | sshd(21736)---bash(21737) | ||
sshd(21780)---bash(21781)---pstree(22332) | sshd(21780)---bash(21781)---pstree(22332) | ||
+ | |||
+ | * '''Change sth inside file''' | ||
+ | |||
+ | sed -i s/'\-9999'/'NaN'/g filename | ||
+ | |||
+ | This will change -9999 with NaN inside a file, without making some tmp file in between. | ||
+ | |||
+ | * '''Print rotated picture''' | ||
+ | |||
+ | lp -o media=a4 -o orientation-requested=4 -o fitplot figure.ps | ||
+ | |||
+ | * '''Print in fixed width format with awk''' |
Revision as of 19:01, 26 October 2009
Usefull short commands
- kill a process tree
When some script is started from a command line in a for-loop and a process tree is made, one should find the parent process and its PID and then simply kill it:
$ pstree username -p sshd(19953)---bash(19954)---bash(22238)---idl(22323)-+-{idl}(22326) |-{idl}(22327) |-{idl}(22328) `-{idl}(22329) sshd(20096)---bash(20097) sshd(20762)---bash(20763) sshd(21087)---bash(21088)-+-grep(21309) `-top(21308) sshd(21736)---bash(21737) sshd(21780)---bash(21781)---pstree(22331)
Or if this tree is to long, one should grep the program (here:idl) with: $ pstree usrname -p | grep idl
$ kill 19953 $ pstree username -p sshd(20096)---bash(20097) sshd(20762)---bash(20763) sshd(21087)---bash(21088)-+-grep(21309) `-top(21308) sshd(21736)---bash(21737) sshd(21780)---bash(21781)---pstree(22332)
- Change sth inside file
sed -i s/'\-9999'/'NaN'/g filename
This will change -9999 with NaN inside a file, without making some tmp file in between.
- Print rotated picture
lp -o media=a4 -o orientation-requested=4 -o fitplot figure.ps
- Print in fixed width format with awk