#!/usr/bin/perl
use strict;

my @certs;

while(<DATA>)
{
    push @certs, /\'([-.\w]+)\'/ if(/added/);
}

print join("\n", @certs), "\n";

__DATA__
Sep 12 17:30:02 nt-ca-na CA(Domain-CA): Certificate name 'jsmith.2048' added to database.
Sep 12 20:09:37 nt-ca-na CA(Domain-CA): Certificate name 'ksmith.2048' added to database.
Sep 12 21:25:30 nt-ca-na CA(Domain-CA): Certificate name 'ssmith.2048' added to database.