Mass-backup for CDs and DVDs on Linux

Published: Jan. 4, 2015
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Here's a little shell script to create backups from many removable discs in a row. The only user interaction in the loop is to change the disc and close the tray. The script waits each time until a new disc is inserted. Thanks to http://serverfault.com/questions/215915/wait-for-tray-closed-or-blank-cd-inserted-in-bash-script for the key snippet of code that waits for the tray!

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#!/bin/sh

# Usage: backuploop.sh <input device> <output location>
# No safety checks etc. to keep it compact

# Outer endless loop
while true ; do
        echo "waiting for media..."
        # This bit loops while the device contains no media
        # Sanity checks etc. are left as an exercise to the reader :-P
        while udisks --show-info $1 | grep -qc "has media: *0" ; do 
                sleep 1
        done
        # This waiting time is necessary to let the device settle
        sleep 1
        # Here goes your backup operation.
        dvdbackup -i $1 -M -p -r a -o $2
        # This is important so that the inner loop actually waits.
        eject $1
        # The status of udisks is update with a short delay after eject returns, 
        #so we wait a moment.
        sleep 5
done

Have fun!

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