#!/bin/sh size=$(awk '/Mem:/ {l=5242880;print((s=$2/2)<l)?$2-l:s}' /proc/meminfo) mount none /proc -t proc mount none /tmp -t tmpfs -o size=$size,nosuid,nodev,mode=1777 mkdir -p /dev/pts mount none /dev/pts -t devpts mount -t sysfs none /sys 2>&- mount -o remount,rw /dev/root /