Linux-help commands

To get help on commands
     help <command name>
          eg: help cat
     <command name> --help
          eg: grep --help
     <command name> -h
          eg: chmod -h
     whatis <command name>
          eg: whatis grep

To get “man” pages
     man <command name>
          eg: man ls
To search for a particular word within a man page
     type “/word”.
To quit from a man page, just
     type the “Q” key.
If you don’t remember the actual command
     man -k <keyword to search>
          eg: man -k permission
          You will find a line in the output that looks something
like: chmod (1) - change file access permissions

To get “info” pages
     info <command name>

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