Mini Shell

#!/usr/bin/sh
# Copyright 1994 David C. Niemi
# Copyright 1994,1997,2001,2002 Alain Knaff.
# This file is part of mtools.
#
# Mtools is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# Mtools is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with Mtools.  If not, see <http://www.gnu.org/licenses/>.
#
# mcheck [ <DOS drive letter> ]
#
# Read every file on an MS-DOS formatted disk to make sure they're good.
#
# Requires: mdir and mread utilities from mtools in user's path.
#
# 1994/02/19	DCN	Created
# 1994/??/??	ALK	Added case statement for results of mdir
# 1994/09/24	DCN	Cleanup (5 minutes on top of the 30 seconds creating it)
# 1994/12/01	DCN	Better comments, notices to stderr
#
# Copyright (C) 1994 David C. Niemi (niemi@tuxers.net)
# The author requires that any copies or derived works include this
# copyright notice; no other restrictions are placed on its use.
#

set -e
set -u

DRIVE=${1:-'A:'}
mdir ${DRIVE}'*'
case $? in
2)
	echo "No files on disk." >&2
	exit 0
	;;
1)
	exit 1
	;;
0)
	;;
esac

echo >&2; echo "Verifying files on drive ${DRIVE}..." >&2
if mtype -/ ${DRIVE}\* > /dev/null; then
	echo "Disk in drive ${DRIVE} is OK." >&2
	exit 0
else
	echo "Disk in drive ${DRIVE} has errors." >&2
	exit 1
fi

## NOTREACHED ##