#!/usr/bin./perl use strict; use warnings; my @in=("TFS100","TFS 100","TFS-CR100", "TFS-CR 100","TFS_100","TFS ID 100", "TFS CR 100","TFS ID100","TFS-ID 100", "TFS ID:100","TFS-ID: 100", "- TFS CR634: STRESS: H 17326,21600,", "CR0080588","TFS0080588" ); for (@in){ print "$1\n" if /TFS[-_\s]?(?:CR|ID)?\s?([1-9]\d+)/; }