#!/bin/bashDEVICE=DEST_PARTITION=TMP_MOUNTPOINT="/tmp/${RANDOM}_usb_mount"SYSLINUX_CFG_FILE="/tmp/syslinux.cfg"SRC_DIR=FILES_TO_COPY="casper disctree dists install pics pool preseed .disk isolinux/* md5sum.txt README.diskdefines ubuntu.ico casper/vmlinuz casper/initrd.gz install/mt86plus"mkUbuntuUsbBootImage(){ # check params if [ ! -b "$DEVICE" ]; then echo "The given device is not a valid block device." exit 1 fi if [ ! -d "$SRC_DIR" ]; then echo "The source directory is not valid." exit 2 fi uid=`id -u` if [ "$uid" != "0" ]; then echo "You must be root to use this script." exit 3 fi echo "$DEVICE1" DEST_PARTITION=${DEVICE}"1" echo "**********************************************" echo "* Destination Device: $DEVICE" echo "* Source Directory: $SRC_DIR" echo "*" echo "* Destination Partition: $DEST_PARTITION" echo "**********************************************" echo "Umount the destination device." umount "$DEST_PARTITION" echo "Delete the mbr." dd if=/dev/zero of="$DEVICE" bs=512 count=1 echo "Write new mbr." echo ',,6,*' | sfdisk "$DEVICE" # the auto mounter mounts it umount "$DEST_PARTITION" echo "Create FAT16 filesystem." mkfs.vfat -F 16 -n usb "$DEST_PARTITION" echo "Prepare the usbstick for booting." syslinux -sf "$DEST_PARTITION" echo "Ensure that the mbr is proper." lilo -M "$DEVICE" # create temporary mount point mkdir "$TMP_MOUNTPOINT" # mount the usb stick mount "$DEST_PARTITION" "$TMP_MOUNTPOINT" if [ ! -f "$SYSLINUX_CFG_FILE" ]; then getSysLinuxCfg fi # copy the syslinux config file to the usb stick echo "Copy syslinux configuration file to the destination device." cp "$SYSLINUX_CFG_FILE" "$TMP_MOUNTPOINT" # go to the directory that contains the ubuntu cd "$SRC_DIR" # copy ubunto to the usb stick echo "Copy the Ubuntu Live System image to the device." cp -rf ${FILES_TO_COPY} "$TMP_MOUNTPOINT" umount "$DEST_PARTITION" echo "Operation successful. You can now safely plug out your usb device."}getSysLinuxCfg(){ TMP_FILE="/tmp/${RANDOM}_syslinux_cfg_file" # download the config file echo "Download syslinux configuration file." wget "http://pendrivelinux.com/downloads/usyslinux.tar" -O "$TMP_FILE" # untar it echo "Download succeded, untar it." cd /tmp tar -xf "$TMP_FILE"}help(){ # echo the help echo "Usage: $0 operation device sourcedir" echo " --create" echo " device The device file of the usb stick" echo " sourcedir The directory that contains the ubuntu image" echo "Note: You must have lilo, sfdisk, dd, syslinux and mtools installed."}case "$1" in "--help") help; ;; "--create") DEVICE="$2" SRC_DIR="$3" mkUbuntuUsbBootImage; ;; *) help; ;;esac