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- All right, let's have
a look at the commands

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that we have seen in this lesson.

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It all started with chown,
for change ownership.

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We have seen chgrp, which is
for changing group ownership.

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You don't really need chgrp
because you can use chown

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to change user as well as group
ownership at the same time.

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We have seen chmod to
change the permission mode.

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Pretty important command.

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It's really the command
to manage permissions.

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We have also seen diff, diff,

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which allows you to show you
differences between two files.

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We have seen that in a
context of set user ID,

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where you want to use finds to find files

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that have set user ID, and to
compare files to one another

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to see if anything has changed.

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Unless it's about umask,

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umask has been used for
the default permissions.

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That's all the commands that
we have used in this lesson.

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Let's go do the end of lesson lab.