You should also add "ls", "cd" and "mv" to the command list.

ls = view inside an directory (i.e. ls /home/user)
ls -a = view all files, even the hidden ones
ls -l = view it like a list

cd = go up and down in the file system (i.e. cd /home/user/)
cd .. = go down one step
cd ~ = go to home directory

mv = move or rename a file or directory (i.e. mv /home/file.txt /home/user/file.txt)