1. Lecture Three

2. Objective: Enable students to understand the practical side of Linux operating system. Understand and implement the following commands:  logname command.  help command.  date and time commands.  cal command.  Clear command.  halt command.

3. The logname command. 18)- The logname command: Display login name.

4. The help command. :19)- The help Command list of command will be displayed in the command prompt.

5. The date and time commands. 20) The date command: Displays the system day, date and time.

6. The date and time commands. 21) The time command: Displays the system time.

7. The cal command. 22)- The cal command: Display a monthly calendar.

8. The clear command. 23)- The clear command: Clear and reset the display the screen.

9. The halt command. 24)- The halt command: Halt system / shutdown.

10. Conclusion: Learn Linux commands. Understand and implement the logname, help, date, time, cal, clear, halts commands.