Logging in, Session, Logging out
To use the system, a user must have an account on it. Basically, an account is a login, a password, and a personal home directory.
A user identifies himself to the system by typing his login and password when they are requested (by a virtual console, or by a graphical program called a display manager):
- Logging in in a virtual console gives the user a shell (called a login shell).
- Opening a "console" or a "terminal" in a graphical user interface means opening a new text window which contains a shell (which is a not a login shell).
Logging in is the beginning of a user session. Sessions end when users log out.
- Terminate a login shell.
- Terminate a login or a non login shell.