Linux Open/Close Session PDF

Chapter 3 Open/close session 1 User-computer interface Types of user interfaces Command Line Interface (CLI) Graphical User Interface (GUI) Why would you use the console? Speed: some tasks are...

Chapter 3 Open/close session 1 User-computer interface Types of user interfaces Command Line Interface (CLI) Graphical User Interface (GUI) Why would you use the console? Speed: some tasks are much faster to perform using command lines. Exhaustivity: some tasks can only be performed on a console. 2 User-computer interface Linux Graphical User Interface (GUI) 3 User-computer interface Command Line Interface (CLI) 4 Login  A Linux session encompasses the time from when a user logs in or starts interacting with a system until he/she log out.  A session begins with the user logging in with an account name and associated password.  Before logging in, the user must be registered with a login and password.  The user has two ways to log on: Graphical mode. Console mode (Terminal). 5 Login Graphical mode 6 Login Mode console (Terminal) L’utilisateur dispose de plusieurs raccourcis pour accéder à la console : Ctrl + Alt +F1 : terminal 1 (tty1) ; Ctrl + Alt +F4 : terminal 4 (tty4) ; Ctrl + Alt +F2 : terminal 2 (tty2) ; Ctrl + Alt +F5 : terminal 5 (tty5) ; Ctrl + Alt +F3 : terminal 3 (tty3) ; Ctrl + Alt +F6 : terminal 6 (tty6) ; Ctrl + Alt +F7 : retour au mode graphique. 7 Login Console mode (Terminal) Login password 8 Password change Graphical mode To change the password using the graphical user interface, follow the steps below: 1- click on “System settings”. 2- click on “User accounts”. 9 Password change Graphical mode 3- click on “Unlock” then log in. 4- click on “Password” 10 Password change Graphical mode 5- Change password. 11 Password change Console mode (Terminal) A user can change his password using the command passwd. 12 Logout For security reasons and to free up the workstation, the user must log out at the end of each session. Graphical mode Console mode Utilisez la commande logout 13