UNIX / Linux Shell Script To Copy Disk (DOS Like DISKCOPY Command)

#!/bin/bash
# Shell Script to copy the complete  contents of a diskette to another diskette
# under UNIX / Linux.
# -------------------------------------------------------------------------
# Copyright (c) 2007 nixCraft project <http://cyberciti.biz/fb/>
# This script is licensed under GNU GPL version 2.0 or above
# -------------------------------------------------------------------------
# This script is part of nixCraft shell script collection (NSSC)
# Visit http://bash.cyberciti.biz/ for more information.
# -------------------------------------------------------------------------
 
SOURCE="$1"
DEST="$2"
if [ $# -le 1 ]; then
        echo "Copies the contents of one floppy disk to another."
        echo "diskcopy /dev/fd0 /dev/fd1"
        echo "diskcopy /dev/fd0 /tmp/floppydisk.img"
        exit 1
fi
 
if [ !  -b $SOURCE ]; then
        echo "Error - Floppy device $SOURCE does not exits."
        exit 2
fi
 
if [ !  -b $DEST ]; then
        echo "Error - Floppy device $DEST does not exits."
        exit 2
fi
 
echo "Enter disk in $SOURCE and press [Enter] key..."
read enterKey
 
dd if=$SOURCE of=$DEST