#!/bin/bash

# This script verifies the backup drive is mounted, so that
# you know it is OK and backups can proceed. The reason is that you
# probably don't want to back up files to your on-board drives, so you
# only want to run the backups if the external drive is mounted.

#### Configuration: Edit the next few lines to set this script up.
#
# BACKUPSTR: Text to look for that you would see if you run the /bin/mount
#   command while the drive is mounted (but not if it isn't mounted), such as
#   the name of the backup directory on the remote device.
# BACKUPDIR: Your mount point for the backup drive.
# ROOTDIR: Subdirectory of BACKUPDIR where you store / backups.
# BOOTDIR: Subdirectory of BACKUPDIR where you store /boot backups.
# OPTDIR: Subdirectory of BACKUPDIR where you store /opt backups.
BACKUPSTR=YOURTEXT
BACKUPDIR=/opt/YOURMOUNTPOINT
ROOTDIR=rootbackups
BOOTDIR=bootbackups
OPTDIR=optbackups
#### End of configuration

# Check to see if the bakdrive is mounted by verifying that the BACKUPSTR
# is part of the output of /bin/mount.

if !( /bin/mount | /bin/grep ${BACKUPSTR} > /dev/null 2> /dev/null )
then
    echo "Backup drive not mounted"
    exit 1
fi

# Check to see that all the backup dirs are there.

if !(test -d ${BACKUPDIR}/${ROOTDIR} )
then
    echo "Backup root dir not there"
    exit 1
fi

if !(test -d ${BACKUPDIR}/${BOOTDIR} )
then
    echo "Backup boot dir not there"
    exit 1
fi

if !(test -d ${BACKUPDIR}/${OPTDIR} )
then
    echo "Backup opt dir not there"
    exit 1
fi

# If we get here, all tests passed and we are OK.

exit 0