Quick script to build a USB bootable stick

script2.sh

#!/bin/bash
# Quick script to build a USB bootable stick
# Requires syslinux, sfdisk, dosfstools, and looptools
# ex: script2.sh /dev/sdd /path/to/overlay

USBDEVICE=$1
if [ ! $1 ]
then
        echo You must specify the full path to the USB device, e.g. /dev/sdd
        exit 1
fi
OVERLAY=$2
if [ ! $2 ]
then
        echo You must specify the full path to the OVERLAY directory to use.
        exit 1
fi

base_usb=$(basename "$USBDEVICE")
base_overlay=$(basename "$OVERLAY")
echo -e '\033k'$base_overlay':'$base_usb'\033\\'

# First, try to make sure the device is unmounted first
umount $USBDEVICE
umount ${USBDEVICE}1

# The new, adaptive way!!!
echo "o
n
p
1


t
6
a
1
w" | fdisk $USBDEVICE
if [ ! "x$?" = "x0" ]
then
        echo "Error partitioning device!"
        exit 1
fi
cat /usr/lib/syslinux/mbr.bin > $USBDEVICE
if [ ! "x$?" = "x0" ]
then
        echo "Error installing bootloader!"
        exit 1
fi

USBDIR=`mktemp -d`

mkdosfs ${USBDEVICE}1
if [ ! "x$?" = "x0" ]
then
        echo "Error formatting partition!"
        exit 1
fi
syslinux ${USBDEVICE}1
if [ ! "x$?" = "x0" ]
then
        echo "Error installing syslinux!"
        exit 1
fi
mount ${USBDEVICE}1 ${USBDIR}/
if [ ! "x$?" = "x0" ]
then
        echo "Error mounting partition!"
        exit 1
fi
#cp -va ${OVERLAY}/* ${USBDIR}/
rsync -rt -vCP --stats --delete --delete-excluded ${OVERLAY}/* ${USBDIR}/
if [ ! "x$?" = "x0" ]
then
        echo "Error copying to device!"
        exit 1
fi
umount ${USBDIR}/
if [ ! "x$?" = "x0" ]
then
        echo "Error unmounting device?!?"
        exit 1
fi
rmdir ${USBDIR}

echo -e '\033kDONE\033\\'