Scrapbook
Migrate Users UID/GID
YOU ARE HERE (Consolidate this into a scraps)
chown --from=1000:1000 999:999 /. -Rv
clone drives and change uuids
screen dd if=/dev/sda of=/dev/sdj bs=1M status=progress
apt install uuid-runtime
printf '%s\n' p x i $(uuidgen) r w | sudo fdisk /dev/sdj
e2fsck -f /dev/sdj2
tune2fs -U $(uuidgen) /dev/sdj2
blkid