L. J. Jaeckel
CMPSC 210 — Linux System Administration
March 6, 2011

Listing of shell script files:
mount_midterm1   and   umount_midterm1

These two scripts, assigned as part of CMPSC 210 Mid-Term project, do these things:

Both of these scripts reside in /root/bin and can be run only as root user.

mount_midterm1: 
     1	#!/bin/bash
     2	# mount_midterm1
     3	# L. J. Jaeckel
     4	# March 6, 2011
     5	#
     6	# Mount the data partition and activate
     7	# the swap partition on disk 2.
     8	
     9	# --------------------------------------------------------
    10	
    11	# Define data partition and where it's mounted,
    12	# and the swap partition:
    13	
    14	data2dev=/dev/sdb2
    15	data2mnt=/mnt/sdb2
    16	swap2dev=/dev/sdb1
    17	
    18	# Who am I?  Only root can do all this:
    19	
    20	myuid=`id -u`
    21	if [ $myuid != 0 ]
    22	then
    23	    echo Sorry, `whoami`, only root can do.
    24	    exit
    25	fi
    26	
    27	# See if the data partition is already mounted by
    28	# looking for it in output from df:
    29	
    30	df | grep ^$data2dev > /dev/null
    31	d2mounted=$?
    32	
    33	# See if the swap partition is already active by
    34	# looking for it in output from swapon -s:
    35	
    36	swapon -s | grep ^$swap2dev > /dev/null
    37	s2active=$?
    38	
    39	# --------------------------------------------------------
    40	
    41	# Mount the data partition if it is not already:
    42	
    43	if [ $d2mounted = 0 ]
    44	then
    45	    echo "Data partition $data2dev is already mounted."
    46	else
    47	    echo "Mounting data partition $data2dev on $data2mnt"
    48	    mount $data2dev $data2mnt 
    49	fi
    50	
    51	# --------------------------------------------------------
    52	
    53	# Activate the swap partition if it is not already:
    54	
    55	if [ $s2active = 0 ]
    56	then
    57	    echo "Swap partition $swap2dev is already active."
    58	else
    59	    echo "Activating swap partition $swap2dev"
    60	    swapon $swap2dev 
    61	fi
    62	
    63	# --------------------------------------------------------
    64
umount_midterm1: 
     1	#!/bin/bash
     2	# umount_midterm1
     3	# L. J. Jaeckel
     4	# March 6, 2011
     5	#
     6	# Un-mount the data partition and de-activate
     7	# the swap partition on disk 2.
     8	
     9	# --------------------------------------------------------
    10	
    11	# Define data partition and where it's mounted,
    12	# and the swap partition:
    13	
    14	data2dev=/dev/sdb2
    15	data2mnt=/mnt/sdb2
    16	swap2dev=/dev/sdb1
    17	
    18	# Who am I?  Only root can do all this:
    19	
    20	myuid=`id -u`
    21	if [ $myuid != 0 ]
    22	then
    23	    echo Sorry, `whoami`, only root can do.
    24	    exit
    25	fi
    26	
    27	# See if the data partition is already mounted by
    28	# looking for it in output from df:
    29	
    30	df | grep ^$data2dev > /dev/null
    31	d2mounted=$?
    32	
    33	# See if the swap partition is already active by
    34	# looking for it in output from swapon -s:
    35	
    36	swapon -s | grep ^$swap2dev > /dev/null
    37	s2active=$?
    38	
    39	# --------------------------------------------------------
    40	
    41	# Un-mount the data partition if it is not already:
    42	
    43	if [ $d2mounted = 0 ]
    44	then
    45	    echo "Un-mounting data partition $data2dev"
    46	    umount $data2dev 
    47	else
    48	    echo "Data partition $data2dev is already not mounted."
    49	fi
    50	
    51	# --------------------------------------------------------
    52	
    53	# De-activate the swap partition if it is not already:
    54	
    55	if [ $s2active = 0 ]
    56	then
    57	    echo "De-activating swap partition $swap2dev"
    58	    swapoff $swap2dev 
    59	else
    60	    echo "Swap partition $swap2dev is already not active."
    61	fi
    62	
    63	# --------------------------------------------------------
    64