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 V7

kill

KILL(2) 							System Calls Manual							   KILL(2)

NAME

       kill  -	send signal to a process

SYNOPSIS

       kill(pid, sig);

DESCRIPTION

       Kill sends the signal sig to the process specified by the process number in r0.	See signal(2) for a list of signals.

       The sending and receiving processes must have the same effective user ID, otherwise this call is restricted to the super-user.

       If the process number is 0, the signal is sent to all other processes in the sender's process group; see tty(4).

       If the process number is -1, and the user is the super-user, the signal is broadcast universally except to processes 0 and 1, the scheduler
       and initialization processes, see init(8).

       Processes may send signals to themselves.

SEE ALSO

       signal(2), kill(1)

DIAGNOSTICS

       Zero is returned if the process is killed; -1 is returned if the process does not have the same effective user  ID  and	the  user  is  not
       super-user, or if the process does not exist.

ASSEMBLER

       (kill = 37.)
       (process number in r0)
       sys kill; sig

																	   KILL(2)

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