How to kill a Zombie process ?

Zombie process are already a dead process, hence they can't be killed using normal command as

#kill -s  SIGCHLD  <pid>

So use the beloe mentioned commands to kill the zombie process.

#ps -aux | grep  Z  or

#ps -aux | awk '{ print $8 " " $2 }'| grep Z

#kill -9 <pid>