Command list

Disk free - to establish the drive letter.

df -Th

Unmount the target USB stick

umount /dev/sd?1

replacing ? with your drive letter.

Script command - 2 GB USB stick

su -c "livecd-iso-to-disk --reset-mbr --overlay-size-mb 450 --home-size-mb 750 --unencrypted-home /run/initramfs/livedev /dev/sd?1"

Script command - 4 GB USB stick

su -c "livecd-iso-to-disk --reset-mbr --overlay-size-mb 700 --home-size-mb 2200 --unencrypted-home /run/initramfs/livedev /dev/sd?1"

replacing ? with your drive letter.