Kill a list of processes Post: 302919859

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Top Forums UNIX for Advanced & Expert Users Kill a list of processes Post 302919859 by Aia on Sunday 5th of October 2014 01:50:01 AM

10-05-2014

Registered User

Quote:

Originally Posted by cokedude

[...] 6243 was the uid I was using to filter the user I wanted.

As a way of information `ps' has some more options that might allow you to tailor more custom output that just `ps aux'.

For example if you want to kill any processes containing "a.out" for the user 6243:

Code:

kill $(ps -U 6243 | awk '$5 ~ /a\.out/ {print $1}')

As a "rule of thumb" anything that grep can do, awk can also achieve. So if you use awk, you most likely do not have to bother with another filter like grep.

There's also a very useful unix utility named `lsof' that can be handy when dealing with processes. If your system has it installed it is worthwhile to get familiar with it.
If you want to kill only the processes number of the program top that user 6243 has initiated.

Code:

kill $(lsof -t -u 6243 -a -c top)

-t: will output only the pid
-u: user id or name
-a: ANDing operator
-c: command

Last edited by Aia; 10-05-2014 at 02:57 AM.. Reason: Adding meaning of flags

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LEARN ABOUT BSD

kill

KILL(1) 						      General Commands Manual							   KILL(1)

NAME

       kill - terminate a process with extreme prejudice

SYNOPSIS

       kill [ -sig ] processid ...
       kill -l

DESCRIPTION

       Kill  sends the TERM (terminate, 15) signal to the specified processes.	If a signal name or number preceded by `-' is given as first argu-
       ment, that signal is sent instead of terminate (see sigvec(2)).	 The  signal  names  are  listed  by  `kill  -l',  and	are  as  given	in
       /usr/include/signal.h, stripped of the common SIG prefix.

       The  terminate  signal  will  kill  processes  that do not catch the signal; `kill -9 ...' is a sure kill, as the KILL (9) signal cannot be
       caught.	By convention, if process number 0 is specified, all members in the process group  (i.e.  processes  resulting	from  the  current
       login)  are  signaled  (but  beware:  this works only if you use sh(1); not if you use csh(1).)	Negative process numbers also have special
       meanings; see kill(2) for details.

       The killed processes must belong to the current user unless he is the super-user.

       The process number of an asynchronous process started with `&' is reported by the shell.  Process numbers can also be found by using ps(1).
       Kill  is  a  built-in  to  csh(1); it allows job specifiers of the form ``%...'' as arguments so process id's are not as often used as kill
       arguments.  See csh(1) for details.

SEE ALSO

       csh(1), ps(1), kill(2), sigvec(2)

BUGS

       A replacement for ``kill 0'' for csh(1) users should be provided.

4th Berkeley Distribution					  April 20, 1986							   KILL(1)

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