grab PID of a process and kill it in a script

psytropic · #1 (**permalink**) 05-22-2009

Code:

#!/bin/sh
who
echo "\r"
echo Enter the terminal ID of the user in use:
echo "\r" 
read TERM_ID
echo "\r"
ps -t $TERM_ID | grep sh
echo "\r"
echo Enter the process number to end:
echo "\r"
read PID
echo "\r"
kill -9 $PID

What this code does is ultimately grab the PID of a users sh and kill it. Sometimes users accidentally close their terminal windows the wrong way and our UNIX logon script does not let them back into the system because it still sees them logged in.

What I would like to do is take this script a step further and have it auto kill the process by finding the PID after the grep sh and sticking that into the kill string.

jim mcnamara · #2 (**permalink**) 05-22-2009

maybe:

Code:

who
echo "\r"
echo 'Enter the terminal ID of the user in use: '
echo "\r" 
read TERM_ID
ps -t $TERM_ID | grep sh | read PID junk
kill -9 $PID

psytropic · #3 (**permalink**) 05-22-2009

that's a no go it is not pulling the PID #

devtakh · #4 (**permalink**) 05-23-2009

Code:

ps -t $TERM | grep sh | awk '{print $1}'

sould give you the PID. Assign it in a variable or just let your SHELL evaluate it on a direct KILL command.

Kill -9 ` command`

matrixmadhan · #5 (**permalink**) 05-24-2009

Quote:

Sometimes users accidentally close their terminal windows the wrong way and our UNIX logon script does not let them back into the system because it still sees them logged in

Are you using a customized login? Why isn't the login system not allowing again? This might apply a restriction of just one tty per user login. May be I didnot understand the problem correctly.

matrixmadhan · #6 (**permalink**) 05-24-2009

Quote:

Originally Posted by devtakh

Code:

ps -t $TERM | grep sh | awk '{print $1}'

sould give you the PID. Assign it in a variable or just let your SHELL evaluate it on a direct KILL command.

Kill -9 ` command`

grep'ing can be done in awk itself

Code:


ps -t $TERM | awk '/sh/ { print $1 }'

psytropic · #7 (**permalink**) 05-26-2009

Code:

#!/bin/sh
who
echo "\r"
echo Enter the terminal ID of the user in use:
echo "\r" 
read TERM_ID
echo "\r"
ps -t $TERM | awk '/sh/ { print $1 }'
read PID
echo "\r"
kill -9 $PID

works great unless 2 PID's are returned. I guess it is typing:
kill -9 0001
0002

instead of kill -9 0001 0002

how do I get it to read the PID's and put them all into 1 line?

More UNIX and Linux Forum Topics You Might Find Helpful
Thread	Thread Starter	Forum	Replies	Last Post
[REQ] Automatic script kill process	onisoc	Shell Programming and Scripting	3	05-25-2009 06:17 AM
Script to kill process...	malcomex999	Shell Programming and Scripting	2	03-02-2009 11:29 AM
crontab or looping script to Kill process from user	Meert	UNIX for Dummies Questions & Answers	5	02-10-2009 11:08 AM
Script to kill process	Lestat	Shell Programming and Scripting	5	06-15-2005 12:09 PM
Script to kill all child process for a given PID	sanjay92	UNIX for Dummies Questions & Answers	4	03-21-2002 03:28 PM

Bits Awarded / Charged to devtakh for this Post
Date	User	Comment	Amount
05-23-2009	vidyadhar85	Great work!!	1,000

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search
Display Modes	Rate This Thread
Switch to Linear Mode Hybrid Mode Switch to Threaded Mode	Rate This Thread:


	Powered by