Ext: MD5 Check program code (PERL)

Using two different functions, checkmd5sum.pl is faster than checkmd5sum_find.pl in terms of execution efficiency.

1.checkmd5sum.pl #!/usr/bin/perl # # File:checkmd5sum.pl # Author:amxku.net # date:2008-12-...
The two use different functions, and the execution efficiency is checkmd5sum.pl faster than checkmd5sum_find.pl.
1.checkmd5sum.pl

#!/usr/bin/perl
# File:checkmd5sum.pl
# Author:amxku.net
# date:2008-12-02
# License:gpl-2

Use DIGEST::MD5;
Use Io::file;
Use POSIX QW (strftime);

if (@ARGV! = 1) {
print "Check files md5sum/nusage:<rootdir>/nexample:c://n";
Exit
}

$now _time=strftime "%y-%m-%d%h:%m:%s", localtime;
$MD 5sumfile_name=strftime "%y_%m_%d_%h_%m_%s", localtime;

Open Md5file, "> $md 5sumfile_name.txt" or Die "$!/n/n";
Print Md5file "# Check Files md5sum/n/n";
Print Md5file "# Created on $now _time/n";
Print Md5file "# amxku_at_msn.com/n/n";
My $root = $ARGV [0];
Sub Lsr_s ($) {
my $cwd = shift;
My @dirs = ($cwd. ' /');

My ($dir, $file);
while ($dir = Pop (@dirs)) {
Local *DH;
if (!opendir (DH, $dir)) {
Warn "Cannot opendir $dir: $! $^e ";
Next
}
foreach (Readdir (DH)) {
if ($_ eq '. ' | | $_ eq ') {
Next
}
$file = $dir. $_;
if (!-l $file &&-D _) {
$file. = '/';
Push (@dirs, $file);
}
Process ($file, $dir);
}
Closedir (DH);
}
}

My ($size, $dircnt, $filecnt) = (0, 0, 0);

Sub Process ($$) {
my $file = shift;
Print $file, "/n";
if (substr ($file, Length ($file)-1, 1) EQ '/') {
$dircnt + +;
}
else {
$filecnt + +;
$size + =-S $file;
My $fileinfo = Genchksuminfo ($file);
Print Md5file "$fileinfo/n";
}
}

Sub Genchksuminfo
{
My ($file) = @_;
My $chk = Digest::md5->new ();
My (@statinfo) = stat ($file);
$chk->add (@statinfo [0,1,2,3,4,5,7,9,10]);
$chk->addfile (Io::file->new ($file));
Return sprintf ("md5:%s/t%s", $chk->hexdigest, $file);
}

lsr_s ("$root");
Print "/n$filecnt files, $dircnt directory. $size bytes./n ";
My $dateinfo = "/n$filecnt files, $dircnt directory. $size bytes./n ";
Print Md5file "$dateinfo/n";
Close (Md5file);
2.checkmd5sum_find.pl

#!/usr/bin/perl
#
# File:checkmd5sum_find.pl
# author:p0150 & Amxku
# License:gpl-2

Use File::find;
Use DIGEST::MD5;
Use Io::file;
Use POSIX QW (strftime);

if (@ARGV! = 1) {
Print "Usage: <rootdir>/n";
print "example:c://n";
Exit
}
$now _time=strftime "%y-%m-%d%h:%m:%s", localtime;
$now _string=strftime "%y_%m_%d_%h_%m_%s", localtime;

Open Md5file, "> $now _string.txt" or Die "$!/n";
Print Md5file "#/n";
Print Md5file "# Created on $now _time/n";
Print Md5file "#/n";
Print Md5file "/n";
Chomp (My $dir = $ARGV [0]);
Find (/&wanted, $dir);
Sub Wanted
{
Unless (-D $_)
{
Print $File:: Find::d ir. '/'. $_. " /n ";
My $name = $File:: Find::d ir. '/'. $_;
My $fileinfo = Genchksuminfo ($name);
Print Md5file "$fileinfo/n";
}
}

Sub Genchksuminfo
{
My ($file) = @_;
My $chk = Digest::md5->new ();
My (@statinfo) = stat ($file);
$chk->add (@statinfo [0,1,2,3,4,5,7,9,10]);
$chk->addfile (Io::file->new ($file));
Return sprintf ("md5:%s/t%s", $chk->hexdigest, $file);
}
Close (Md5file);

SOURCE from Link: http://www.hackbase.com/tech/2009-11-03/57649.html