How about this?
#!/usr/local/bin/perl -w
use strict;
use Data::Dumper;
my %old_hash =
(
'1.1.1.1' => 'nfs,1',
'4.4.4.4' => 'cifs,0',
'10.0.4.2' => 'afp,1',
'3.3.3.3' => 'nfs,0',
'5.5.5.5' => 'afp,0',
);
my %new_hash =
(
'1.1.1.1' => 'nfs,0', # index change
'200.4.4.4' => 'cifs,0', # IP change
'200.0.4.2' => 'afp,1', # IP change
'3.3.3.3' => 'nfs,1', # index change
'5.5.5.5' => 'afp,0',
'4.22.2.22' => 'afp,2', # new entry
);
my %changes;
foreach my $key ( keys %new_hash )
{
$changes{$key} = $new_hash{$key}
unless ( (exists $old_hash{$key}) && $new_hash{$key} eq $old_h
+ash{$key} );
# gotta check for existence to quiet warnings.
}
print Dumper( \%changes );
Outputs:
:!./test.pl
$VAR1 = {
'4.22.2.22' => 'afp,2',
'1.1.1.1' => 'nfs,0',
'3.3.3.3' => 'nfs,1',
'200.4.4.4' => 'cifs,0',
'200.0.4.2' => 'afp,1'
};
Let me know if you see anything that it would miss.
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