Bash script to automate archiving of optical discs

adisc.sh

#! /bin/bash
#
# adisc - Optical Disc Auto-Transfer Tool - v0.9
# by Sophie Forceno

#
# This script loops until user intervention
# Iteratively creates directories, mounts each disc
# Uses rsync to copy disc contents to dir, unmounts disc
# Then prompts user to insert next disc 
#

#
# If your optical disk drive auto-mounts to $disk_label/ 
# it is recommended that you add the noauto parameter to the fstab entry
# Example: 
#               /dev/sr0 /media/optical udf,iso9660 users,noauto,rw 0 0

# Optical drive device location
OPTICAL_DEV="/dev/sr0"
# Optical disc mount point
OPTICAL_DIR="/media/andy/optical"
# Destination to which discs are copied
DEST_DIR="/media/andy/discs"
# Upper limit of for loop (set to # of discs)
LIMIT="250"

# Main loop. 
for ((i=1;i<=$LIMIT;i++)); do

# Check that mountpoint folder exists
if [[ ! -d "$OPTICAL_DIR" ]]; then
        sudo mkdir "$OPTICAL_DIR"
fi

# Check if folder is empty
if [ -n "$(ls -A "$OPTICAL_DIR")" ]; then
# Status = 1: Disc mounted 
        status="1"
else
# Status = 0: Disc not mounted
        status="0"
        echo "Mounting disc..."
        sudo mount -t iso9660 "$OPTICAL_DEV" "$OPTICAL_DIR" && wait
        sleep 8
        status="1"
fi

# If disc is mounted, begin copying
if [[ "$status" = "1" ]]; then
echo -e "Copying disc $i...\n"
# Iteratively generate folders
        sudo mkdir "$DEST_DIR/disc $i"
        sudo rsync -av "$OPTICAL_DIR/" "$DEST_DIR/disc $i" && wait 
echo  "Ejecting..."
        eject && wait && sleep 2
        status="0"
fi
# If disc is (most likely) ejected, ask for next disc
if [[ "$status" = "0" ]]; then
echo "Please insert a disc into the drive and press any key to continue"
echo "Or press the x key to e(X)it..." 
read -n1 char && wait && sleep 6
        case $char in
        x|X) 
             exit 0
             ;;
        *)   
              sleep 4
             continue
             ;;
esac
fi
done