#!/bin/sh
# Author: Didier Spaier, Paris, France
#

CWD=$(pwd)
#

EFIOPTIONS="-eltorito-alt-boot -e isolinux/efiboot.img -isohybrid-gpt-basdat -no-emul-boot"
xorriso -as mkisofs \
    -isohybrid-mbr /usr/share/syslinux/isohdpfx.bin \
    -hide-rr-moved \
    -U \
    -V "ISO64_CURRENT" \
    -J \
    -joliet-long \
    -r \
    -v \
    -x kernels \
    -o $PATHTOISO \
    -b isolinux/isolinux.bin \
    -c isolinux/boot.cat \
    -no-emul-boot \
    -boot-info-table $EFIOPTIONS . \
)  2>${PATHTOISO%iso}log.txt
chown -R `stat -c %U:%G $CWD` $PATHTOISO ${PATHTOISO%iso}log.txt $ISO
printf "%b" "** Completed. ***

If writing the ISO was successful an hybrid DVD/USB image:
$PATHTOISO is ready.\n"
echo "Check the directory $TMP"
#rm -r $TMP