title: Raspberry pi 2 os.System() command returning 0
body: <p>OK so I am using a raspberry pi 2 and using python to run a command on terminal. Usually I'm using os.system('<em>terminal Command here</em>'). the problem with that is, when i run the program using <em>sudo python3 filename</em> it will print the command i want it to but it also prints a <em>0</em>. I'm guessing that the 0 is a sign that the command ran successfully but i don't want the 0 to appear. Is there any way to get rid of it returning 0</p>