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As we learned in the previous
lesson, Linux comes from open source, and

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in open source you often have
many solutions for the same problem.

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That's also true
for getting help.

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So which are
the help systems?

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Well, MAN is the primary
source. We've been talking about it.

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Info shows information
for some commands.

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This information is not organized in a very practical way, but
if a command is showing that the real information is maintained

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by info, you might want to copy and paste the info
command that you find at the end of the main page.

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We have also talked about Command
help, which provides short usage overview.

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Apart from that, a limited amount
of information is available in usershare doc

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that can contain additional information about
commands and programs that you are using.

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The big question which one of
these are you going to use?

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As for myself, I'm using Command
help all the time because commands in

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Linux have many, many options and
it's impossible to memorize all of them.

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If command help is not good enough and I need
more detail, I'm using MAN and for the rest of

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IT Info and user shared doc. I don't use them
very often at all. I suggest you do the same.