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how to kill the process after specific time?

Hi All,

I need to define the specific duration to run a process. i mean after specific time the process should be killed autometically.

plese help me to do this.

Thanks.

You need to develop a bit more your question.
In what language you plan to write your application, the process you mentioned ?
Or is a regular application in binary format you want to control it ?
It is acceptable is this application receives a TERM signal to die or it need to follow some special procedure before that ?

Anyway, the simple case is to use kill to send a TERM signal to the application.

Code:

#!/bin/bash



# the application you want to terminate after a while

prog=xclock



# the time you want to wait before killing it

time=5m



# run it in background

${prog} &



# wait...

sleep $time



# ...and kill

kill %1

Quote:

Originally Posted by marozsas (Post 3072592)

Code:

#!/bin/bash



# the application you want to terminate after a while

prog=xclock



# the time you want to wait before killing it

time=5m



# run it in background

${prog} &



# wait...

sleep $time



# ...and kill

kill %1

Thanks fr your reply. Look i run a script through cron. lets suppose it works for indefinite time. I just want to kill this process automatically after 5 hours. so what should i do?
can i specify the time with my script when it runs with cron? or any other way?

Quote:

Originally Posted by samengr (Post 3072604)

Thanks ....

I have done this ....

see the example ... just wrote a small script

runtime=${1:-1m}
mypid=$$
cp /Database/Client_db_200802110231.BAK .&
cpid=$!
sleep $runtime
kill -s SIGTERM $cpid
echo "Both processes are terminated".

I mean now i can define the running time duration of all processes like cp with the time.

Cheers.

I did it in bash a while back. Did it 2 ways; wallclock time and cpu time. Keep in mind that I was doing it as an exercise, so any rough spots are because it worked for me.

here is the wallclock script:

Code:

#!/bin/bash

#sample script to start a program, permit it to run for a predefined amount of wallclock time, then kill it.  Specify time in seconds

#

progID="gmplayer"

$progID &

mypid=`eval ps ax|grep "$progID"|grep -iv "grep"| awk '{print $1}'`

echo "mypid $mypid"

maxtime="5"

mins=0

secs=0

killmins=5

startsecs=`eval date | awk '{print $4}'| awk -F\: '{print $3}'`

starthours=`eval date |awk '{print $4}'| awk -F\: '{print $1}'`

startmins=`eval date |awk '{print $4}'| awk -F\: '{print $2}'`

while [ $secs -lt $killmins ]; do

  cursecs=`eval date | awk '{print $4}'| awk -F\: '{print $3}'`

  curhours=`eval date |awk '{print $4}'| awk -F\: '{print $1}'`

  curmins=`eval date |awk '{print $4}'| awk -F\: '{print $2}'`

  secs=$(( (curhours-starthours)*3600 + (curmins-startmins)*60 - startsecs + cursecs ))

  sleep 1

done

kill "$mypid"

and here is the cpu time version:

Code:

#!/bin/bash

#sample script to start a program, permit it to run for a predefined amount of CPU time, then kill it.

#

progID="gmplayer"

$progID &

mypid=`eval ps ax|grep "$progID"|grep -iv "grep"| awk '{print $1}'`

echo "mypid $mypid"

maxtime="5"

mins=0

killmins=5

while [ $mins -lt $killmins ]; do

  usePID=`eval ps ax|grep "$progID"|grep -iv "grep"| awk '{print $4}'`

  hours=`eval echo "$usePID" | awk -F\: '{print $1}'`

  mins=`eval echo "$usePID" | awk -F\: '{print $2}'`

  sleep 1

  echo "$usePID"

  echo "$hours"

  echo "$mins"

done

kill "$mypid"

Quote:

Originally Posted by jiml8 (Post 3073285)

I did it in bash a while back. Did it 2 ways; wallclock time and cpu time. Keep in mind that I was doing it as an exercise, so any rough spots are because it worked for me.

Here is the script with some corrections:

File Edit Options Buffers Tools Insert Help

Code:

#!/bin/bash                                                                                                                                                                      

#sample script to start a program, permit it to run for a predefined amount of wallclock time, then kill it.  Specify time in seconds                                            

#                                                                                                                                                                                



progID="amarok" # replace by your binary

$progID &

mypid=`eval ps ax|grep "$progID"|grep -iv "grep"| awk '{print $1}'`

echo "mypid $mypid"

mins=0

secs=0

killmins=300

startsecs=`eval date +%-S `

starthours=`eval date +%-H`

startmins=`eval date +%-M`



#echo "startsecs=$startsecs starthours=$starthours startmins=$startmins"                                                                                                        



while [ $secs -lt $killmins ]; do

    cursecs=`eval date +%-S `

    curhours=`eval date +%-H`

    curmins=`eval date +%-M`

    echo "Aval..."

    secs=$(( (curhours-starthours)*3600 + (curmins-startmins)*60 - startsecs + cursecs ))

    echo "Secs: $secs"

    sleep 1

done

kill "$mypid"

if [ $? -eq 0 ]; then

    echo "Process $mypid was killed"

fi