Your two if statements are incompatible - they can never both be true, so no substitution can happen. Aside from that the code works. Consider:

use strict;
use warnings;

my $HR_wnt = {'res.ldlibrarypath' => 'Flobble=/opt/app/Flobble:'};
my $HR_unx;
my $HR_component;
my $target = 'Flobble';

for my $hashref ($HR_wnt, $HR_unx, $HR_component) {
    for my $id (keys %$hashref) {
        if ($id eq 'res.ldlibrarypath') {
            if ($$hashref{$id} =~ /=\//) {
                $$hashref{$id} =~ s/\/opt\/app\/$target.*?://;
            }
        }
    }
}

print $HR_wnt->{'res.ldlibrarypath'};

[download]

Prints:

Flobble=

[download]

Update actually there is nothing wrong with the two if statements. Bogus comment struck, working sample data supplied, commented code reinstated and sample output corrected.

True laziness is hard work

In reply to Re: Update hash value by GrandFather
in thread Update hash value by Sun751

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