User & Group Deletion (Demo)
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Video Transcription
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>> Hello there Cybrarians and welcome back to
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the Linux Plus course here at Cybrary.
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I'm your instructor Rob Goelz and in
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today's lesson we're going to be
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discussing user and group deletion.
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Upon completion of today's lesson
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you're going to understand how to delete
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users and groups by using
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the userdel and groupdel commands.
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The userdel command is used to
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delete the user account. It's very well named.
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In common, userdel commands are userdel,
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which will just remove the user account,
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or userdel -r, which deletes
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the user and any of
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the directories that are created for the user,
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such as the home directory.
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Now the groupdel command is
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used to delete the group account.
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We just use groupdel and
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then the name of the group to delete the group.
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But let's check out these two
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commands with some demo time.
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Here we are over in our CentOS environment
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and the your del command is pretty simple,
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but there are a few got us though.
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For instance, let's delete the user tests,
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let's do an id on the user test,
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and we can see all of
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the information about this user here.
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Let's go to ls on the home directory,
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and we can see that we have in test and test2.
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Let's just do a userdel on test.
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We need to be pseudo to do this.
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Now if we do a id on test again,
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we're going to see that there is no such user.
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If we do an ls on home,
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we still see tests.
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Why do we still see tests there?
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Well, this is because we didn't use
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the dash r flag when we tried to remove a user.
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Let's do this for test2.
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If you do id test2,
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we can see the user ID for this user account with 1003,
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we can see as part of we'll group.
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Let's do an ls on home.
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We can see my account,
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my home directory as well as test and test2.
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But for test2 let's do userdel -r and specify test2.
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We need to be pseudo to do this,
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of course, here we go.
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Now let's do an ls on home again.
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Now we can see that test2 has been removed.
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Remember, when you're doing a userdel,
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you have to use this dash r option or
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flag in order to
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remove the user's home directory as well.
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Now let's take a look at the groupdel command.
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Let's clear the screen first.
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By comparison, groupdel is very basic.
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We just really run groupdel
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and then the name of the group we want to remove.
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In our case, let's get rid of that worst group.
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If I do cat etc group,
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we can see down here at the bottom we have worst with
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the group ID is 666.
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Let's do a groupdel.
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I'll clear the screen, actually,
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bring all the beltway back at the top.
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If we do a groupdel on worst and then hit "Enter".
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Now if we do a cat etc group again,
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we don't see any down at the bottom,
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if we do a grep for worst in etc group,
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and we can't see anything there either,
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so we've removed that group.
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We've reached the end of this lesson.
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In this lesson we covered
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user and group deletion with
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the commands userdel and groupdel.
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Thank you so much for being here and I look
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forward to seeing you in the next lesson.
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