home/system/etc/rc.local

#!/bin/sh -e
#
# rc.local
#
# This script is executed at the end of each multiuser runlevel.
# Make sure that the script will "exit 0" on success or any other
# value on error.
#
# In order to enable or disable this script just change the execution
# bits.
#
# By default this script does nothing.

create_user_dir() {
	local u="$1" d=
	shift

	for d; do
		if [ ! -d "$d" ]; then
			mkdir "$d"
			chown "$u:$u" "$d"
		fi
	done
}

create() {
	local u="$1" d0="$2" d1="$3" dp=

	create_user_dir "$u" "$d1"

	if [ "$(readlink "$d0")" != "$d1" ]; then

		create_user_dir "$u" "$(dirname "$d0")"

		rm -rf "$d0"
		ln -snf "$d1" "$d0"
	fi
}

mount2() {
	local d="$1"
	shift

	if ! grep -q " $d " /proc/mounts; then
		mount "$@" "$d"
	fi
}

T=/var/cache/tmpfs
mkdir -p "$T"
mount2 "$T" -t tmpfs -o nosuid,nodev none
#mount2 /var/cache/apt -t tmpfs -o nosuid,nodev none

for user in ame amery xubuntu; do
	[ -d "/home/$user" ] || continue

	create_user_dir "$user" "/var/cache/tmpfs/$user"

	for d in \
		.cache \
		.cache/mozilla \
		; do

		create_user_dir "$user" "/home/$user/$d" "/var/cache/tmpfs/$user/$d"
	done

	for d in \
		.cache/thunderbird \
		.cache/chromium \
		.cache/google-chrome \
		.cache/mozilla/firefox \
		; do
		create "$user" "/home/$user/$d" "/var/cache/tmpfs/$user/$d"
	done
done

exit 0