tears in rain - Twenty-First Century Meyer

#!/bin/sh
######################################################################
# tirsync - Synchronize Tears in Rain master and local mirror data sets.
# Created 2006-09-21 by David Meyer.
######################################################################

# Identification #####################################################

PROGRAM='tirsync (Tears in Rain)'
VERSION=0.0
COPYRIGHT='Copyright (C) 2006 David Meyer'
DESCRIPTION='Synchronize Tears in Rain master and local mirror data sets.'
USAGE="Usage: $0 [-Vh] [get|put]"
CONTACT='David Meyer <papa@jtan.com>'

# Initialize environment #############################################

unset IFS
PATH=
ECHO=/bin/echo
CAT=/bin/cat
RSYNC=/usr/bin/rsync
RSH=/usr/bin/ssh

MASTER=papa@callisto.jtan.com:public_html/Meyer21C/
LOCAL=/mnt/card/Meyer21C/
OPTIONS='-urptlzv --stats --progress --delete'

# Arguments ##########################################################

while getopts Vh option
do	case $option in
	V )	$ECHO "$PROGRAM $VERSION"
		$ECHO $COPYRIGHT
		exit 0
		;;
	h )	$CAT << ENDHELP
$USAGE

$DESCRIPTION

Options:
	-V	Display version number
	-h	Display this help message
	get	Download from master to local data set files not found in
		local data set or more recently updated than corresponding
		member of local set, delete local files not found in
		master data set.
	put	Upload files from local data set not found in master or
		more recently updated than corresponding member of master
		data set, delete master files not found in local data set.

Report bugs to $CONTACT.
ENDHELP
		exit 0
		;;
	* )	$ECHO $USAGE >&2
		exit 1
		;;
	esac
done

shift $(( $OPTIND-1 ))
COMMAND=$1


# Functions ##########################################################


# Main driver ########################################################

if [ x"$COMMAND" = x"get" ]
then	$RSYNC -e$RSH $OPTIONS $MASTER $LOCAL
elif [ x"$COMMAND" = x"put" ]
then	$RSYNC -e$RSH $OPTIONS $LOCAL $MASTER
else	$ECHO $USAGE >&2
fi

exit 0