Shell script for checking md5sum of CDs

[Guest ndeb]

The script has been tested to work fine with supermount enabled. The cdrecord package must be installed for the script to work. I got it from http://www.troubleshooters.com/linux/coast...ess.htm#rawread and rectified some errors and here's what I use:

#!/bin/sh



device=$1



if test "$1" = ""; then

       echo "  Usage:   rawread <cdrom-device>"

       echo "  Example: rawread /dev/cdrom"

       exit 0

fi



blocksize=`isoinfo -d -i $device | grep "^Logical block size is:" | cut -d " " -f 5`

if test "$blocksize" = ""; then

       echo catdevice FATAL ERROR: Blank blocksize >&2

       exit

fi



blockcount=`isoinfo -d -i $device | grep "^Volume size is:" | cut -d " " -f 4`

if test "$blockcount" = ""; then

       echo catdevice FATAL ERROR: Blank blockcount >&2

       exit

fi



command="dd if=$device bs=$blocksize count=$blockcount conv=notrunc,noerror"

echo "$command" >&2

$command

[aru]

You've forgoten to tell us how to check the md5sum of the iso using that script :D

If the script is named rawread, then get the md5sum of the cdrom by doing:

 

rawread /dev/cdrom | md5sum

[ramfree17]

i always thought

$ cat /dev/cdrom | md5sum

does the trick? but i dont know if it works when supermount is enabled. :roll:

 

ciao!

[aru]

yes, that does the trick; but ndeb's script does the same but with a few checks before :)

[Guest ndeb]

I have supermount enabled. I tried

cat /dev/cdrom | md5sum

for mdk-9.0 CD1 and got

ca676384df5ed11ff6900a513b18bcf6

which is wrong.

 

With the same CD and CD drive, when I ran

rawread /dev/cdrom | md5sum

I got the correct md5sum

f7a093af34b8cbe1abc165213fea9deb

 

Clearly, the cat command does not work.