root@Darkness:~# kill -9 1
root@Darkness:~# ps -el | grep 'Z'
F S   UID   PID  PPID  C PRI  NI ADDR SZ WCHAN  TTY          TIME CMD
0 Z  1000  8850     1  0  80   0 -     0 exit   ?        00:00:00 iftop <defunct>
root@Darkness:~# kill -9 1
root@Darkness:~# ps -el | grep 'Z'
F S   UID   PID  PPID  C PRI  NI ADDR SZ WCHAN  TTY          TIME CMD
0 Z  1000  8850     1  0  80   0 -     0 exit   ?        00:00:00 iftop <defunct>
root@Darkness:~#