ThyArmageddon Mount Assignment 20130711-073807

Mount Assignment

The assignment was to write a python script that imitates the mount command that can be ran from the terminal using:

$ mount

The python script wrote is called, conveniently, mount.py and runs using:

$ python mount.py

or if made executable:

$ ./mount.py

The python script can be found at the following link .

Code and Explanation

The code is shown below with comments to explain each part of it.

#!/usr/bin/env python
"""
 This script will act like the mount command
 it will format what's found in /proc/mounts
"""

import sys


def mountinfo():

    """
    This function will open /proc/mounts
    Then it will read the contents line by line
    It will parse it and call printmount() function to display it
    """

    fd = open("/proc/mounts")  # Open /proc/mounts in read only mode
    for line in fd:            # Read line by line the content

        """
        The following will split the line using spaces as delimiters
        Then the first 4 outputs will be saved in 4 variables
        and the rest disregarded
        """

        mountname, mountpath, mounttype, mountdesc, _, _ = line.split(" ")

        """
        Call printmount() function to print the output
        """

        printmount(mountname, mountpath, mounttype, mountdesc)
    fd.close()  # Never forget to close the file once done using it


def printmount(mountname, mountpath, mounttype, mountdesc):

    """
    printmout() function will print the arguments formatted correctly
    We also breka the line to keep each conform with python's < 80 chars
    """

    print "%s on %s type %s (%s)" % \
        (mountname, mountpath, mounttype, mountdesc)

if __name__ == '__main__':
    mountinfo()  # call the mountinfo() function
    sys.exit(0)