(python) issue bash commands from within python script (alla perl system($cmd))

Question

Within a python script, I want to issue a command. In perl, I could define a command, save it as a variable (here, $cmd) then type system($cmd) and then the command is executed.

How can i do that in python?

Ignacio Vazquez-Abrams · Accepted Answer · 2010-02-11 22:31:16Z

6

You can use os.system(), but prefer subprocess instead.

answered Feb 11, 2010 at 22:31

Ignacio Vazquez-Abrams

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Aleksa · Accepted Answer · 2010-02-11 23:32:10Z

1

Another good choice is "commands" module: http://docs.python.org/library/commands.html.

answered Feb 11, 2010 at 23:32

Aleksa

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ghostdog74 · Accepted Answer · 2010-02-11 23:50:54Z

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you can use os.system(), or the newer subprocess module. Other possible alternatives (for older Python versions) include these. (eg os.spawn*,os.popen*,etc)

Lastly, try using Python's modules to do operating system stuff instead of calling external commands if possible, unless its a third party tool you are executing and Python doesn't have the api.

answered Feb 11, 2010 at 23:50

ghostdog74

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