topic Re: kill process in Operating System - Linux

kill process

ust3 — Mon, 26 Nov 2007 22:53:33 GMT

I have a script ( run by user ) that can find some user dead process ( like below ) , then another script will kill all these process, however , I found that one of these process is the user self login process ( pid : 58741 ) , therefore , when the script try to kill these dead process , it may be kill the user login process , if it is the case , then the user will logout and DO NOT kill other process ( of course , the user is logged out , all user's command will be stopped ) , can advise if I want to make sure it can kill ALL process , what can I do ? thx

58741 <-- the user login process
82587
58412
47521
87934
25462

Re: kill process

Dennis Handly — Mon, 26 Nov 2007 23:05:44 GMT

Do you want it to kill the "user login process"? Or skip that and kill the rest.

If the former, you may need to use nohup to prevent the killing process from dying.
If the latter, you need to filter out that specific process.

Re: kill process

Kapil Jha — Mon, 26 Nov 2007 23:07:32 GMT

Hi,
Can you post the script , how u r finding that these are the dead process????
if u are doin some grep...
why u using two scripts???
ps -ef|grep <>|awk ....|xargs kill

may help!!!1
More infomation is needed.
BR,
Kapil

Re: kill process

Venkatesh BL — Mon, 26 Nov 2007 23:23:53 GMT

The problem is a little confusing. If the script that is supposed to report 'dead' processes reports an 'active' user login process, then something needs to be corrected in the script itself.

Re: kill process

ust3 — Tue, 27 Nov 2007 04:37:05 GMT

thx replies,

I would like to clearly state what I want , I use the script in linux , in linux , there is a path /proc , that have all user process (as below) , I have a script to kill this process by user themself , but when the user kill its process , it may be kill its current process before kill other process , then the user have logged out but other process is still in the system , so can advise how to force the user can kill all process at the same time ? thx

cd /proc
ll |grep test_user
dr-xr-xr-x 3 test_user EDP 0 Nov 27 17:20 10437
dr-xr-xr-x 3 test_user EDP 0 Nov 27 17:20 10587

Re: kill process

Dennis Handly — Tue, 27 Nov 2007 05:13:45 GMT

>I use the script in linux

Since this is linux specific, you should have created a thread in that forum.

>it may be kill its current process before kill other process but other process is still in the system, so can advise how to force the user can kill all process at the same time?

As I mentioned the first time, use nohup:
$ nohup your_script > /dev/null 2>&1 &
(If you don't redirect the output, it will be placed in nohup.out.)

Re: kill process

Stuart Browne — Wed, 28 Nov 2007 04:30:40 GMT

Don't use '/proc' like that. There are better ways.

If you are that user, the 'ps -u'.

If you aren't that user, then 'ps -U ' instead.