Chroot adventures 2.0

sudo reboot now???

tl;dr: Yes... sudo reboot now.

from reboot docs:

[...] Otherwise this simply invokes the shutdown(8) tool with the appropriate arguments.

The shutdown command looks like this:

shutdown [OPTION]... TIME [MESSAGE] .

Anything passed into reboot will just get passed along to shutdown, including the time parameter.

TIME may have different formats, the most common is simply the word 'now' which will bring the system down immediately.

"now" is a valid time for shutdown so it reboots the system asap.