archfs

#!/bin/sh
#
# Archfs - entirely copied from part of the Tazusb utility supplied with
# SLiTaz GNU Linux - with some cosmetic changes.
#
#
### Tazusb - SliTaz LiveUSB
###
### Tazusb is an utility to generate, configure and manipulate SliTaz LiveUSB
### bootable media and/or USB /home partition, such as flash keys, SD card or
### USB harddisk.
###
### Authors : Christophe Lincoln (Pankso) <pankso@slitaz.org>
###           Andrew Miller (Spode) <spode@spodesabode.com>
#
COMMAND=$1

case $COMMAND in
	writefs)
		# Writefs to rootfs.gz
		if [ -z $2 ]; then
			COMPRESSION=none
		else
			COMPRESSION=$2
		fi
		# Start info
		echo ""
		echo -e "\033[1mWrite filesystem\033[0m
===============================================================================
The command writefs will write all the current filesystem into a suitable cpio
archive (rootfs.gz) usable on a bootable LiveUSB media.

Archive compression: $COMPRESSION"
		echo ""
# Create list of files
		find /bin /etc /init /sbin /var /lib /lib64 /root /usr >/tmp/list

		for dir in /boot /dev /home /proc /sys /tmp /mnt /media /run
		do
			echo $dir >>/tmp/list
		done


		# Generate initramfs with specified compression
		if [ "$COMPRESSION" = "lzma" ]; then
			echo -n "Creating archfs.gz with lzma compression... "
			cat /tmp/list | cpio -o -H newc | lzma > /archfs.gz

		elif [ "$COMPRESSION" = "gzip" ]; then
			echo -n "Creating archfs.gz with gzip compression... "
			cat /tmp/list | cpio -o -H newc | gzip -9 > /archfs.gz

		else
			echo -n "Creating archfs.gz without compression... "
			cat /tmp/list | cpio -o -H newc > /archfs.gz
		fi


		# Get initramfs size
		size=`du -sh /archfs.gz | cut -f 1`


		echo "==============================================================================="
		echo "Root filesystem size: $size"
		echo ""
		echo -en "----\nENTER to continue..."; read i
		;;
esac

exit 0