#!/bin/sh # the part below relates to systemd as init specifically rpm -q systemd-sysvinit || exit 0 sub() { local file="$1" shift for i in "$@"; do grep -q "^$i" "$file" || echo "$i" >> "$file" done } # aufs2 root is rw in reality; but don't bother if there's a record already grep -q '[[:space:]]/[[:space:]]' /etc/fstab || sub /etc/fstab '/dev/root / auto defaults 0 0'