Need help howto make a script for Set SNOOP run for 5 minutes

tindasz · #1 (**permalink**) 05-26-2009

Hi all,

I want to monitoring my interface every 6 hours where i want to run snoop command to capture all packet through the interface, so i want running snoop then snoop will run for 5 minutes after that snoop stop then will start again after 6 hours than run for 5 minutes again.

thereis any guide for me how to start that script?

vidyadhar85 · #2 (**permalink**) 05-26-2009

use crontab or at command

tindasz · #3 (**permalink**) 05-26-2009

ok i try using crontab, that run for every 6 hours but snoop never stop.. i want to make it just running for 5 minutes

matrixmadhan · #4 (**permalink**) 05-26-2009

here is a hint

Code:

run snoop in background
get the background process pid using $!
sleep for 300 seconds
once done, kill $!

then you are done

tindasz · #5 (**permalink**) 05-26-2009

get the background process pid using $!

How to get it ?
are u have a sampe of script?

vidyadhar85 · #6 (**permalink**) 05-27-2009

Quote:

Originally Posted by tindasz

get the background process pid using $!

How to get it ?
are u have a sampe of script?

this is what you have to do

Code:

 
 snoop &
PID=`echo $!`
sleep 600
kill -9 $PID

matrixmadhan · #7 (**permalink**) 05-27-2009

Quote:

Originally Posted by vidyadhar85

this is what you have to do

Code:

 
 snoop &
PID=`echo $!`
sleep 600
kill -9 $PID

just this would do

Code:

PID=$!

and no need for an echo command

Code:

kill -2 $PID

Code:

if not kill -9 $PID

no brutal kill in the beginning itself

-----Post Update-----

Quote:

Originally Posted by devtakh

Or you can capture it using grep and awk

Code:

PID=`ps -ef | grep snoop | awk '{print $2}'`
kill -9 $PID

[ $2 or $3 in awk depending on your output]

-Devaraj Takhellambam

there are some problems to this

snoop from other users
grep itself is a process
and the last - when something is available for free in the form of $!

you don't have to work on it again

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