Ex :
$ ps -edf | grep defunct
root 7542 7541 0 - ? 0:00 <defunct>
root 7450 7449 0 - ? 0:00 <defunct>
root 7546 7545 0 - ? 0:00 <defunct>
root 7544 7543 0 - ? 0:00 <defunct>
$ ps -ecl | grep Z
F S UID PID PPID CLS PRI ADDR SZ WCHAN TTY TIME CMD
0 Z 59002 7450 7449 - 0 - 0 - ? 0:00 <defunct>
$ preap 7450
7450: exited with status 0
$ preap 7542
7542: exited with status 0
$ preap 7544
7544: exited with status 0
$ preap 7546
7546: exited with status 0
$ ps -edf | grep defunct
$
BING !
No more zombie here ^^
