Hmm, okay. What you are saying makes sense.
I'm actually wondering if it might be more beneficial for me to check if
the local DHCP port (udp 67) is bound and in use. I had tried to do this
some time ago, and couldn't get it working right (it would always test
true, even when it shouldn't have). Can anyone steer me in the right
direction on port status?
Jason Bailey
Network Technician
Emery Telcom
Office: (435) 636-0052
jbai...@emerytelcom.com
On 01/21/2015 09:39 PM, Chris Angelico wrote:
On Thu, Jan 22, 2015 at 2:58 PM, Jason Bailey <jbai...@emerytelcom.com> wrote:
How would I get a list of running processes with the subprocess module? The
documentation wasn't clear to me.
Using the ps command. :)
rosuav@dewey:~$ python3
Python 3.4.2 (default, Oct 8 2014, 10:45:20)
[GCC 4.9.1] on linux
Type "help", "copyright", "credits" or "license" for more information.
import subprocess
b" dhcpd\n" in subprocess.check_output(["ps","-A"])
False
rosuav@sikorsky:~$ python3
Python 3.5.0a0 (default:4709290253e3, Jan 20 2015, 21:48:07)
[GCC 4.7.2] on linux
Type "help", "copyright", "credits" or "license" for more information.
import subprocess
b" dhcpd\n" in subprocess.check_output(["ps","-A"])
True
There's a DHCP server running on Sikorsky, but not on Dewey. :)
Of course, this can be faked. Any process can call itself 'dhcpd' and
pretend to be the DHCP server. It's up to you to decide how to deal
with that. (Probably by not caring, I would expect. Unless you
actually expect someone to maliciously try to confuse your script,
it's not worth the hassle of protecting yourself.)
ChrisA
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