Anonymous Monk has asked for the wisdom of the Perl Monks concerning the following question:
Hi Monks I have the following snippet of code which creates an MD5 hash of a folder using the Digest::MD5::File module. Ideally I just want to use the Digest::MD5 module but from what I've read it can't MD5 hash a folder. I'm unable to get IT to install the Digest::MD5::File module (slow process of installing and testing software) so how do I go about fixing the bottom piece of code to MD5 hash a folder successfully or can you suggest another way to create a hash of a folders contents using the standard MD5 module.
My previous code below wasn't creating an MD5 hash of the folder it was creating a hash of the path and the item number...use Digest::MD5; use Digest::MD5::File; ..... $filemd5->addfile($MD5); my $md5value = $filemd5->hexdigest(); push @md5list,"$md5value,$file"; } my $targetmd5 = $p00path . $p00 . '.md5'; my $MD5 = undef; if (not open ($MD5,'>',$targetmd5)) { print "Could not open $targetmd5 for write,Error: $!\n"; next P00; } my $qcmd5 = Digest::MD5->new(); # Make MD5 Object for checksum print $MD5 "# MD5 File for Optical Media ID $p00\n"; print $MD5 "# ISO created by $name $datestring\n"; foreach my $line (@md5list) { $qcmd5->add($line); print $MD5 "$line\n"; } my $folderMD5 = Digest::MD5::File->new; $folderMD5->adddir($p00path); my $finalmd5 = $folderMD5->hexdigest; print $MD5 "CHECKSUM: $finalmd5\n"; close $MD5; print "Made MD5 file for $p00\n";
$filemd5->addfile($MD5); my $md5value = $filemd5->hexdigest(); push @md5list,"$md5value,$file"; } my $targetmd5 = $p00path . $p00 . '.md5'; my $MD5 = undef; if (not open ($MD5,'>',$targetmd5)) { print "Could not open $targetmd5 for write,Error: $!\n"; next P00; } # Make MD5 Object for checksum my $qcmd5 = Digest::MD5->new(); print $MD5 "# MD5 File for Optical Media ID $p00\n"; print $MD5 "#\n"; foreach my $line (@md5list) { $qcmd5->add($line); print $MD5 "$line\n"; } my $finalmd5 = $qcmd5->hexdigest(); print $MD5 "CHECKSUM: $finalmd5\n";
Thanks
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Re: MD5 Hash of a folder query
by davido (Cardinal) on Jul 09, 2015 at 14:45 UTC |