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- Hi, welcome to Lesson 5.

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While working with Linux,

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it's important to know how
to deal with text files.

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Luckily, in this lesson
you'll learn all about it.

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We start by discussing editors
with a strong focus on vi,

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which is the editor you should know about

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to change the contents of files.

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Next we'll discuss the most common tools

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for displaying file contents,
including more and less,

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head and tail, and cat and tac.

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Another important tool

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that you'll learn about
in this lesson is grep,

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which is helpful if
you're looking for files

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that contain specific contents.

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At the end of this lesson,

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we'll quickly go through all
of the commands you've learned,

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and there is the
end-of-lesson lab as well.