root@htcdream ~ # python
Python 2.6.5 (r265:79063, Oct 22 2010, 03:07:16)
[GCC 4.5.2 20100923 (prerelease)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import os,subprocess
>>> null = os.open("/dev/null",777)
>>> p = subprocess.Popen("gps",stderr=null,stdout=null, shell=True)
>>> p.pid
2210
>>> p.kill()
>>> p.pid
2210
>>> p.pid
2210