Here is an SSCCE showing the storage of the capture groups in an array. Then you don't need a list of numbered scalars.

use strict;
use warnings;

use Test::More tests => 2;

my $re_dn = qr{^(\w+) (\d+) (\d{2}:\d{2}:\d{2}) .*: eth(\d): link down
+};
my $re_up = qr{^(\w+) (\d+) (\d{2}:\d{2}:\d{2}) .*: eth(\d): link up, 
+(\d+)Mbps, ([^,]+), lpa (\w+)};

my @log = (
'May 19 13:58:01 foo: eth0: link down',
'May 19 13:58:11 foo: eth0: link up, 100Mbps, bar, lpa quux'
);

for (@log) {
    my @matches;
    if (@matches = /$re_dn/) {
        my ( $mon, $day, $time, $interface ) = @matches;
        is $time, '13:58:01';
        next;
    }
    if (@matches = /$re_up/) {
        my ( $mon, $day, $time, $interface, $rate, $duplex, $lpa ) = @
+matches;
        is $time, '13:58:11';
        next;
    }
}

[download]

Increase the number of tests as you wish to confirm that all the groups are returning the correct results.

🦛

In reply to Re: scan, match and extract by hippo
in thread scan, match and extract by seismofish

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