Exploring Your Linux System
It’s perfectly safe to take a look at any of the files and directories on your SD card. As an ordinary user, you’re blocked from deleting or damaging any important files in any case, so you can explore the files on your SD card without fear of deleting anything important.
Listing files and directories
The command for listing files and directories is
ls. Because you start in your home directory, if you enter it now, you see the folders and files (if any) in your home directory. Here’s what the output looks like on Sean’s Raspberry Pi. In this chapter, we use bold text for the bits you type, and normal text for the computer’s output.
pi@raspberrypi ~ $