[This question is for UNIX/Linux users.] Use function kill to end (terminate) a pro- cess. First, end it using a SIGINT signal. Wait three seconds. If it did not respond to the SIGINT signal, send the process to a SIGKILL signal.

Question

What will be an ideal response?

Answer 1

```
#!/usr/local/bin/python

import os
import signal
import time
import sys

pid = os.fork() # create child
signal.signal( signal.SIGINT, signal.SIG_IGN )

if pid != 0: # parent

os.kill( pid, signal.SIGINT )

time.sleep( 3 )

# terminate child with SIGKILL signal
try:
os.kill( pid, signal.SIGKILL )
except OSError:
print "Child already terminated"

elif pid == 0: # child

while 1:
print "Child is still here."
time.sleep( 1 )

else: # could not create child
sys.exit( "Error forking child." )
```
Child is still here.
Child is still here.
Child is still here.