I think so, but I could have missed something. this is the content of my script: #!/bin/bash#udisksctl unmount -b /dev/sdb1 && udisksctl power-off -b /dev/sdb --no-user-interaction
udisks --unmount /dev/sdb1 && udisks --detach /dev/sdb
The first two (commented) lines are what I describe above (basically, --no-user-interaction doesn't work for power-off).
The last one with udisks can't work without sudo for now. I'm digging in the manuals.
