#!/bin/bash for i in {01..35}; do sed "s/sXX/s${i}/g" Corefile-sXX > "Corefile-s${i}" sed "s/sXX/s${i}/g" sXX-zone.cis.k7dxs.net.zone > "s${i}-zone.cis.k7dxs.net.zone" done