This sounds like a job for a Schwartzian Transform! I'm too tired to give you any example code at the moment... Sorry!
Update: What a sip of beer can do! Here you go: 
use strict;
use Data::Dumper;

my @data = qw( 124.43.adsf.ca 235.23.aer.ca 100.34.asdm.ca );

my @sorted = map { $_->[ 0 ] }
             sort { $a->[1] cmp $b->[1] }
             map { [$_, /(\d+\.\d)/] }
             @data;

[download]

Greets,

-- JaWi

"A chicken is an egg's way of producing more eggs."

In reply to Re: Sorting @lines by JaWi
in thread Sorting @lines by kanabrian

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