• 3. The built-in help system

    In the design of Unix an "on-line" manual was already a part right from the beginning. Those days "on-line" meant that it was built in to the system. You go "off-line" when you log out. No networking those days! In part 1 we look at the user level commands to access those on-line documentation.

    In the design of the Unix operating system the files are more than mere containers for data. As a result this unit is longer than the others. In part 2 we will walk through the commands to view, copy, delete files and directories. We also cover commands to understand the meta information of files and directories and learn to navigate the file system.

    Commands in this unit: apropos ; help ; info ; man ; whatis

    • 3.1 Instructions: The help system பக்கம்
      Not available unless: The activity 2.3 Test: A shell session is marked complete
    • 3.2 Assignment: The built-in help system
      Not available unless: The activity 3.1 Instructions: The help system is marked complete
    • 3.3 Test: The help system புதிர்
      Not available unless: The activity 3.2 Assignment: The built-in help system is marked complete
    • 3.4 Recording: The help system URL

      The first part from the beginning to 16:25 was about the main topic the built-in help system. The middle part 16:25-24:10 was about the new optional exercise at the end of previous week and final part from 24:10 various administrative information.

      Not available unless: The activity 3.1 Instructions: The help system is marked complete