#!/bin/sh


DIGITS=3 # number of digits for the index
DIR="~/CD-DVD-index"

[ -z "$1" ] && { echo "usage: `basename $0`" \"CD/DVD name\"; exit 1; }

#get the last number
cd /src/CD-DVD-index
LN=`ls | tail -n1 | cut -d ' ' -f 1`
[ -z "$LN" ] && LN="0"
N=`echo "$LN + 1" | bc` # increment
D=`echo -n "$N" | wc -c` # digits
# pad with zero
for i in `seq 1 $(( $DIGITS - $D ))`; do
 N=0"$N"
done
# filename
F="$DIR/$N - $1.ls-lR"

#generate index
cd /mnt/cdrom
ls -lR > "$F"
echo "$F"