my little backup script

backup.sh

#!bash
# backup directories listed in the .backup file of the user's home directory
# if the directory contains a makefile, run make clean to scrub any object
# and/or executable files that don't need backup
#
# backup is placed in a a dated zip archive - copying to removable media
# is not performed

# Copyright (C) 2008 Neil Butterworth

#set -x

# report error and quit
error() {
    echo "ERROR: $*"
    exit 1
}


# we need a .backup file in the users home dir
if [ ! -f ~/.backup ]
then
    error "No .backup file in home directory"
fi

# zip tool and zip output name
ZIPPER="C:/Program Files/7-Zip/7z.exe"
ARCHIVE=~/backup-`date -I`.7z

# existing archive probably means last backup failed
echo "Archive name will be $ARCHIVE"
if [ -f "$ARCHIVE" ]
then
    echo "Removing existing archive"
fi
rm -f "$ARCHIVE"

# read the .backup file which simply contains a list of directories
# to back up recursively using a zip program
while read DIRNAME
do
    # ignore blank lines
    if [ "$DIRNAME" = "" ]
    then
        continue
    fi

    # report missing directory and carry on
    if [ ! -d "$DIRNAME" ]
    then
        echo "No such director as $DIRNAME - skipping"
        continue
    fi

    # possibly clean directory, then zip it
	pushd $DIRNAME > /dev/null
    if [ -f Makefile ]
    then
        make clean > /dev/null
    fi
	popd > /dev/null

    echo "adding $DIRNAME to $ARCHIVE ..."
    if "$ZIPPER" a -r "$ARCHIVE" "$DIRNAME"  > /dev/null
    then
        echo "added ok"
    else
        error "backup failed"
    fi
done < ~/.backup

# that's all folks
echo "completed"