Files are organized into directories.
A directory is a special kind of file that list other files.
A directory can contain any number of files and other directories.
The directory at the top is called the "root" and has a special name "/" ("slash")
(picture)
Log in leads in the directory created for you by the system administrator.
This directory is called your home directory. For example cs241 home directory is:
/u/cs241.
/ is the root and 'u' stores home directories for all users.
The current directory can be changed to your home directory by typing
cd
with no pathname.