Working more effectively with shell – basic commands

Let us learn a few commands, which are required very often, such as man, echo, cat and similar:

  • Enter the following command. It will show the various types of manual pages displayed by the man command:
    $ man man
    

    From the following table, you can get an idea about various types of man pages for the same command:

    Section number

    Subject area

    1

    User commands

    2

    System calls

    3

    Library calls

    4

    Special files

    5

    File formats

    6

    Games

    7

    Miscellaneous

    8

    System admin

    9

    Kernel routines

  • We can enter the man command to display corresponding manual pages as follows:
    $ man 1 command
    $ man 5 command
    
  • Suppose we need to know more about the passwd command, which is used for changing ...

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