Unpack and repack iso from folder

UnpackAndRepackIso.sh

sudo rmdir /tmp/iso
mkdir /tmp/iso
cd /tmp/iso
sudo mount -t iso9660 -o loop oldIso-xyz.iso /mnt/
cd /mnt
sudo tar cf - . | (cd /tmp/iso; tar xfp -)

sudo xorriso -as mkisofs \
    -U -A "volumeName" -V "volumeName" \
    -volset "volumeName" -J -joliet-long -r -v -T \
    -o newIso-xyz.iso \
    -b isolinux/isolinux.bin \
    -c isolinux/boot.cat \
    -no-emul-boot -boot-load-size 4 -boot-info-table -eltorito-alt-boot \
    -e boot/grub/efi.img \
    -no-emul-boot . 

exit