Script for Slax

#!/bin/bash

TMP=/tmp/tmpfs$$
CHANGES=$TMP/changes
UNION=$TMP/union
BUNDLES=/run/initramfs/memory/bundles/
INSTALL="$1"
[ -n "$INSTALL" ] || exit


mkdir -p $TMP
mount -t tmpfs tmpfs $TMP
mkdir -p $CHANGES
mkdir -p $UNION

mount -t aufs -o xino=$TMP/.xino,trunc_xino,br=$CHANGES aufs $UNION
# I don't use chromium so filter it out.
\ls -1d $BUNDLES[0-1]* | grep -v chromium | while read MOD; do
mount -o remount,add:1:$BUNDLES/$(basename $MOD)=ro aufs $UNION
done

for d in boot dev proc sys tmp media mnt run; do
   mkdir -p $UNION/$d
done

chmod ugo+rwx $UNION/tmp

mount --bind /dev $UNION/dev
mount --bind /proc $UNION/proc
mount --bind /sys $UNION/sys

echo "apt-get update; apt-get install --yes $INSTALL" >$UNION/doit
chmod ugo+x $UNION/doit
cp /etc/resolv.conf $UNION/etc/
chroot $UNION /doit

umount $UNION/sys
umount $UNION/proc
umount $UNION/dev
rm $CHANGES/doit
rmdir $CHANGES/* 2>/dev/null
savechanges /"$INSTALL".sb $CHANGES

umount $UNION
umount $TMP
rmdir $TMP