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+/linuxrc
+<code>
+#!/bin/sh
+#
+# BerryBoot, ugly but functional image chooser thingy
+#
+# Author: Floris Bos
+#
+# Standard busybox init
+/bin/mount -t proc proc /proc
+/bin/mount -o remount,rw,noatime /
+/bin/mount -a
+/bin/hostname -F /etc/hostname
+# Enumerate images
+cd /images
+IMAGES=`echo *`
+DIALOG_ARGS="--backtitle 'BerryBoot v0.1' --menu 'Select operating system to boot:' 15 50 10"
+for image in $IMAGES
+do
+        DIALOG_ARGS="$DIALOG_ARGS '$image' ''"
+done
+# Prevent kernel messages being printed through our menu
+echo 0 > /proc/sys/kernel/printk
+# Show dialog
+eval dialog $DIALOG_ARGS 2>/tmp/answer
+if [ $? -eq 0 ]; then
+        echo 1 > /proc/sys/kernel/printk
+        IMAGE=`cat /tmp/answer`
+        DATADIR="/data/$IMAGE"
+        rm /tmp/answer
+        mkdir -p /mnt/squashfs /mnt/aufs $DATADIR
+        modprobe aufs
+        modprobe squashfs
+        echo Mounting image ${IMAGE}...
+        mount -o loop $IMAGE /mnt/squashfs
+        echo Mounting RW data directory on top
+        mount -t aufs -o br:${DATADIR}:/shared:/mnt/squashfs none /mnt/aufs
+        cd /mnt/aufs
+        mkdir -p -m 700 .berryboot
+        umount /sys
+        umount /dev/pts
+        umount /dev/shm
+        umount /tmp
+        umount /proc
+        pivot_root . .berryboot
+        exec chroot . /sbin/init </dev/console 2>/dev/console
+fi
+# In case the user pressed cancel or something went wrong, show an emergency recovery shell
+echo
+echo Emergency shell activated
+echo
+echo To get network connectivity: udhcpc eth0 - wget can be used to download things
+echo Squashfs images are in /images
+echo User changes to the images are in /data
+echo Before shutting down remount readonly: mount -o remount,ro /
+echo
+/bin/sh
+</code>