There are 2 problems there: you are using bge1 as a bareword and you are escaping the dollars in the regex thus preventing them from doing what you want. Here's the working version:

#!/usr/bin/env perl 
use strict;
use warnings;

my $Interface = 'bge1';
$Interface =~ s/[0-9]$/:$&/;
print $Interface . "\n";

[download]

which outputs "bge:1".

In reply to Re: find a substring using regex and then replace it by hippo
in thread find a substring using regex and then replace it by swissknife

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