• Getting Help

    Getting Help:

    The command that are used to get the help are discussed as :

    1. Whatis

    Display a short description of command , it uses a database that is updated nightly. Often not available immediately after installation.

    Syntax:

    # Whatis cal

    1. Help

    Display usage summary and argument list

    Syntax:

    --help

    Example:

    #Date –help

    1. Man and Info:

    Both provide documentation for command. Almost every command has a “man” page. Collection of pages are called linux manual.

    # man date

    # info date

    Viewing Text Page

    Syntax:

    #less [option] [filename]

    Example:

    # less abc.txt

    scroll with arrows/PgUp /PgDown

    /text : search for text

    n : Next Match

    Option:

    -c : Clear before displaying

    -s : Squeeze multiple blank lines into a single blank line

    Simply we can also use “less” along with pipe | as

    # ll |less

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