#!/bin/sh grep -q "GADGET_SERIAL" "${TARGET_DIR}/etc/inittab" \ || echo '/dev/ttyGS0::respawn:/sbin/getty -L /dev/ttyGS0 0 vt100 # GADGET_SERIAL' >> "${TARGET_DIR}/etc/inittab" grep -q "ubi0:persist" "${TARGET_DIR}/etc/fstab" \ || echo 'ubi0:persist /root ubifs defaults 0 0' >> "${TARGET_DIR}/etc/fstab"