[Tutor] Python for linux

[Reuben]

Hello,

I wish to know which python module works well with Linux commands - for
e.g. Searching a string in file, number of occurrences of a string in a
file, what is the permission of a file.

To test this operation I need my python script to login into the Linux
machine and then perform the above mentioned operations

Any specific pointers to help me with this task?

Thanks

Regards,
Reuben