compare a burned dvd or cd with iso file in linux

This is something I've been meaning to write for a while. By using this script and md5sum, you can verify that data burned to CD/DVD matches the original ISO file in Linux. It's a bit tricky, as it's not as simple as just running md5sum against /dev/dvd (the whole disc). That's because more than just the data in the ISO is written to the media (finalizing the disc, etc.).

#!/bin/bash

#Script to check md5sum of iso file against disc in drive
#DEPENDS on md5sum existing in path
#
#script should be called like:
# ./md5check.sh file.iso /dev/dvd

ckFile=$1
ckDrv=$2

echo "Getting file extents..."
fext=$(( $(ls -l $ckFile | awk '{ print $5 }') / 2048 ))

echo "Getting md5sum of file..."
fileMD5sum=`cat $ckFile | md5sum`

echo "Getting md5sum of disc in drive..."
drvMD5sum=`dd if=$ckDrv bs=2048 count=$fext | md5sum`

echo "File md5sum: " $fileMD5sum
echo "Drive md5sum: " $drvMD5sum

if [ "$fileMD5sum" = "$drvMD5sum" ]; then
echo " "
echo "md5sum of" $ckFile "and" $ckDrv "match."
echo " "
else
echo " "
echo "********************************"
echo "******** WARNING!!! **********"
echo "********************************"
echo "** md5sum DOES NOT MATCH!!! ***"
echo "********************************"
echo "********* WARNING!!! **********"
echo "********************************"
echo " "
fi

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compare a burned dvd or cd with iso file in linux

RND(tech)

Saturday, March 26. 2011

compare a burned dvd or cd with iso file in linux

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