[lutz@starship uploads]$ python signal-demo.py 10 &
[1] 11297
[lutz@starship uploads]$ ps -f
UID        PID  PPID  C STIME TTY          TIME CMD
lutz     11089 11088  0 21:13 pts/2    00:00:00 -bash
lutz     11297 11089  0 21:49 pts/2    00:00:00 python signal-demo.py 10
lutz     11298 11089  0 21:49 pts/2    00:00:00 ps -f
[lutz@starship uploads]$ kill -10 11297
[lutz@starship uploads]$ Got signal 10 at Mon Jun 19 21:49:27 2000

[lutz@starship uploads]$ kill -10 11297
Got signal 10 at Mon Jun 19 21:49:29 2000
[lutz@starship uploads]$ kill -10 11297
Got signal 10 at Mon Jun 19 21:49:32 2000
[lutz@starship uploads]$ kill -10 11297
Got signal 10 at Mon Jun 19 21:49:40 2000
[lutz@starship uploads]$ kill -10 11297
Got signal 10 at Mon Jun 19 21:49:42 2000
[lutz@starship uploads]$ kill -9 11297
[lutz@starship uploads]$
[1]+  Killed                  python signal-demo.py 10


[lutz@starship uploads]$ python signal-demo.py 17 &
[1] 11320
[lutz@starship uploads]$ ps -f
UID        PID  PPID  C STIME TTY          TIME CMD
lutz     11089 11088  0 21:13 pts/2    00:00:00 -bash
lutz     11320 11089  0 21:52 pts/2    00:00:00 python signal-demo.py 17
lutz     11321 11089  0 21:52 pts/2    00:00:00 ps -f
[lutz@starship uploads]$
[lutz@starship uploads]$ kill -17 11320
[lutz@starship uploads]$ Got signal 17 at Mon Jun 19 21:52:24 2000
sigchld caught

[lutz@starship uploads]$ kill -17 11320
Got signal 17 at Mon Jun 19 21:52:27 2000
[lutz@starship uploads]$ sigchld caught

[lutz@starship uploads]$ kill -17 11320
Got signal 17 at Mon Jun 19 21:52:29 2000
[lutz@starship uploads]$ sigchld caught