There are two main modules in Python, os and subprocess, that allow executing Linux commands. The subprocess module's call() and Popen() functions execute commands and allow interacting with processes by passing arguments, reading from standard output and error streams, and setting whether to use the shell.

1. Python Execute Unix / Linux Command
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There are two modules in python to excute the linux
commands.
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1. os module
2. subprocess module
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syntax:
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subprocess.call(args, *, stdin=None, stdout=None,
stderr=None, shell=false)

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PASSING ARGUMENTS

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SUBPROCESS.POPEN( ) - STDOUT AND STDERR

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Popen.communicate() interacts with process: Send
data to stdin. Read data from stdout and stderr, until
end-of-file is reached.

10. SHELL VALUE