if [ -f "${DIR}/livesys/binary/isolinux/menu.cfg" -a -f "${DIR}/livesys/config/includes.chroot/usr/share/dktoolian/nobeep.sed" ] then sed -i -f "${DIR}/livesys/config/includes.chroot/usr/share/dktoolian/nobeep.sed" "${DIR}/livesys/binary/isolinux/menu.cfg" fi