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- Welcome to lesson nine.

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In this lesson, you'll learn
how to manage users and groups.

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I'll explain why users are
necessary in Linux environments

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and our users are required
for setting permissions.

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Next you'll learn how to add users

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and groups using useradd and groupadd.

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Once you know about that, I'll explain all

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about different properties of
users, groups, and passwords

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and you'll learn how to
configure defaults for new users.

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I'll then show you how to use
the login CTL session manager.

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And at the end of this lesson,

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you'll find a list of the
commands that were covered,

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as well as the end of
lesson lab and solution.