The_Official_Raspberry_Pi_-_Beginner’s_Book_Vol1,_2018 (1)

(^52) THE OFFICIAL RASPBERRY PI BEGINNER'S GUIDE
Click on the raspberry icon at the top left of the desktop and then click on Shutdown. A
window will appear with three options (Figure 3-21): Shutdown, Reboot, and Logout. Shutdown
is the option you’ll use most: clicking on this will tell Raspbian to close all open software and
files, then shut the Pi down. Once the display has gone black, wait a few seconds until the
flashing green light on the Pi goes off; then it’s safe to turn off the power supply.
To turn the Pi back on, simply disconnect then reconnect the micro USB power cable, or
toggle the power at the wall socket.
5 Figure 3-21: Shutting down the Raspberry Pi
Reboot goes through a similar process to Shutdown, closing everything down, but instead of
turning the Pi’s power off, it restarts the Pi – in almost exactly the same way as if you’d chosen
Shutdown, then disconnected and reconnected the power cable. You’ll need to use Reboot if
you make certain changes which require a restart of the operating system – such as installing
certain updates to its core software – or if some software has gone wrong, known as crashing,
and left Raspbian in an unusable state.
Finally, Logout is only really useful if you have more than one user account on your
Raspberry Pi: it closes any programs you currently have open and takes you to a login screen
on which you are prompted for a user name and password. If you hit Logout by mistake and
want to get back in, simply type ‘pi’ as the user name and whatever password you chose in the
Welcome Wizard at the start of this chapter.