bash-2.03$ ps -ef |grep defunct (The one marked in dark below is Parent Process)
zasshr 8134 24291 0 0:00 <defunct>
...........................
..It will show u a list.........................
bash-2.03$ ptree 24291
24291 /opt/VRTSvcs/bin/CitiEquity/CitiEquityAgent -type CitiEquit
8134 <defunct>
8205 <defunct>
...........................
..It will show u a list.........................
To Find total count for the defunct Parent Process :
bash-2.03$ ptree 24291 |wc -l
158
To clean the defunct Process:
$ preap 24291
24291: exited with status 0
