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Script to kill all child process for a given PID


 
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# 1  
Old 03-21-2002
Question Script to kill all child process for a given PID

Is there any build in command in unix to kill all the child process for a given process ID ? If any one has script or command, please let me know.

Thanks
Sanjay
sanjay92
# 2  
Old 03-21-2002
Trie this :

#!/bin/sh
echo "Enter the parent process ID"
read ppid
for i in `ps -ef| awk '$3 == '${ppid}' { print $2 }'`
do
echo killing $i
kill -9 $i
done

I hope help you

Witt
witt
# 3  
Old 03-21-2002
Thanks for your help.
Your method works to only only level of child process , what about if the child process has sub child process
see the following example :-
suppose, if we want to kill PID=1200, we would like to kill 1520 1544 1508

$ ps -ef
UID PID PPID TTY STIME COMMAND
Administ 820 1 0 22:48:31 /usr/bin/bash
Administ 860 820 0 22:48:35 /usr/bin/bash
Administ 1200 860 0 22:48:37 /usr/bin/bash
Administ 1520 1200 0 22:48:38 /usr/bin/bash
Administ 1544 1520 0 22:53:15 /usr/bin/bash
Administ 1508 1544 0 22:53:19 /usr/bin/ps



Quote:
Originally posted by witt
Trie this :

#!/bin/sh
echo "Enter the parent process ID"
read ppid
for i in `ps -ef| awk '$3 == '${ppid}' { print $2 }'`
do
echo killing $i
kill -9 $i
done

I hope help you

Witt
sanjay92
# 4  
Old 03-21-2002
No problem !
You can change the script... look this :
Code:
#!/bin/sh
while true
do
  echo "Enter parent process id  [type quit for exit]"
  read ppid

  if [ $ppid -eq "quit" -o $ppid -eq "QUIT" ];then
     exit 0
  fi

  for i in `ps -ef| awk '$3 == '$ppid' { print $2 }'`
     do
       echo killing $i
       kill $i
     done
done

added code tags for readability --oombera

Last edited by oombera; 02-18-2004 at 04:42 PM..
witt
# 5  
Old 03-21-2002
Thanks for your suggestion.
I have written a generic script based on your suggestion.
Code:
#########################################

#!/bin/ksh
# This script will kill all the child process id for a  given pid
#Store the current Process ID, we don't want to kill the current executing process id
CURPID=$$

# This is process id, parameter passed by user
ppid=$1

if [ -z $ppid ] ; then
   echo No PID given.
   exit;
fi

arraycounter=1
while true
do
        FORLOOP=FALSE
        # Get all the child process id
        for i in `ps -ef| awk '$3 == '$ppid' { print $2 }'`
        do
                if [ $i -ne $CURPID ] ; then
                        procid[$arraycounter]=$i
                        arraycounter=`expr $arraycounter + 1`
                        ppid=$i
                        FORLOOP=TRUE
                fi
        done
        if [ "$FORLOOP" = "FALSE" ] ; then
           arraycounter=`expr $arraycounter - 1`
           ## We want to kill child process id first and then parent id's
           while [ $arraycounter -ne 0 ]
           do
             kill -9 "${procid[$arraycounter]}" >/dev/null
             arraycounter=`expr $arraycounter - 1`
           done
         exit
        fi
done

#####################################

added code tags for readability --oombera

Last edited by oombera; 02-18-2004 at 04:42 PM..
sanjay92
 

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