On Sun, 02 Sep 2007 19:26:27 +0000, herman wrote:
> But now I would like to do the programmically in my python script. I
> know I can use ' os.system(cmd)' to execute the command 'ps -ef | grep
> emacs', but how
> can I pipe the output of my 'ps -ef | grep emacs' to my python script
> and then run a regression expression with it to get the process Ids?
Use popen.
>>> f = os.popen('ps ax | grep -i PYTHON')
>>> print f.read()
1952 ? Ssl 0:01 /usr/bin/python -E /usr/sbin/setroubleshootd
2117 ? S 0:00 python ./hpssd.py
2376 ? SN 3:19 /usr/bin/python /usr/sbin/yum-updatesd
18087 pts/4 S+ 0:00 python
18115 pts/4 S+ 0:00 sh -c ps ax | grep -i PYTHON
18117 pts/4 R+ 0:00 grep -i python
There is also a module popen2 which does similar but more advanced things.
--
Steven.
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