Name: Linux - 更改文件和文件夾的權限和所有權（chmod, chown, members, groups）。 (Linux - Change Permissions and Ownership for Files and Folders (chmod, chown, members, groups ))
Uploaded: 2021-01-14T10:09:32.000Z
Duration: 23 min 50 s
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please go to the line the computer guy dot com, in order to view schematics, code and Maur for the projects that you are learning about welcome back.

So in today's video, we're going to down Maur into permissions in the Lenox World.

I showed you how permissions work and the limits world where essentially you have three permissions you have read you have right and you have execute.

And you can assign those permissions to the user account that owns the folder, the group account that owns the folder and then everybody else again, it is important to understand that in the Lenox world, permissions are very, very, very simple for good and for ill.

The fact of the matter is that they are simple, that is, this is not the Windows world.

At this point in time, you can probably get a certification just in permissions alone because there is so much going on with permissions and Windows Active directory in the Lenox world, it's simple.

You just only got about six configurations and that's absolutely it.

So I show you how the numbering system worked again.

41 means that type of thing when we're talking about Lennox permissions.

And so today I'm going to show you how to actually set those permissions.

So the big the big tools that we're gonna be using today something called C h o W n basically came owner.

So with this commander able to change the ownership of a file or folder so you can change the user account ownership and you can change the group account ownership for the file folder so that the permissions that correspond to the user account owner and the group account owner can then be aside to the user and to that group account.

And then I will also show you the change Mod Command or C H M o D.

A command on what this does is this actually allows you to kink the permission for a file folder.

So you can you see h m o d you know than 777751157 Whatever had how you want the permissions to be, so I'll show you those two commands today and those will be the two primary commands, and I'm showing you.

We'll also show you a couple of other commands that are interesting, such as the group's command.

The group's command allows you to see what groups a surfing user account is.

That could be very useful and also show you the members commands.

The members Command actually shows you the members of a specific group.

So again, this is one of those problems you get into within the Lenox world, where everything is really simple, just so long as you know, specific information, right?

If you know what the members of a group are, you know what the groups are.

It's very easy to then assign permissions, but one of the problems again, especially if you're coming into a Lennox system that's been running for a number of years.

One of the questions that you have to ask yourself is, Do you know the members of a group?

Do you want to give specific people permission to a file or folder on that can run you into a bit of a problem.

If you don't know how to get that information, so I'll be showing you the group's command.

I'll be showing you the members command and then I'll actually show you something called the Cat Command to look in the group file.

Then that will actually show you all the groups in your particular clinic server s O that again.

You can make sure what groups are there and who you want to make.

So with that, let's go over to my Lennox system to show you how all this works.

Again, I'm using a bunch of 18.4 point three.

Lt s But everything that I'm showing you today should Maur less work on whatever distribution you're using and should be useful for a decade to come, at least.

So we're gonna log in with user account Bob and my super secret password.

123456 And this then logs us into the server.

I will clear the scream the first thing they'll dio as I do many times it's P W d command.

So this will show us the folder that we're currently at Mess.

We're in the Bob folder in the home directory and then what?

I'm going to do is I'm going to l s so list hyphen.

L So this is going to list the files and folders within this directory and give us some more of that security information.

So what do l s l give me total of four results, and I could go over here and I can see the different things from a test file, a test folder, a timber file and a tim file too.

So those four items, basically I have three files and one folder against you with the permissions are so for the test file read, write for the user account that owns the test file read, write for the group user account that owns test file and then read permission for everybody else.

We come over here and we take a look at the user in the group account.

And whenever you create a user, they're also given their own group.

So basically, you could guess the signed permission to sexually to one user.

Permission and then everybody else has the reed permission.

So the user account that owns this has read, right?

Execute Theglobe account that owns this has read execute, and then everybody else, for some reason, has an execute permission.

See, the user account that owns this particular folder is Sue.

Uh, the group account that owns this particular folder is another group, so Sue has read, right?

Members of the another group group have read Execute permission.

We come down here to the temple file, we can see that the owner has read, right?

The group owner has read execute permission and the everybody else as they execute permission.

Members of the test group have read Execute permission.

Test group is the group owner, and we can go over and we can take a look at the permissions.

There s so that basically just gives you an idea of the files, folders, permissions and group ownership within this particular directory s.

So the first thing that I may be interested in is basically wondering.

I wonder what groups I am a part of, right?

So I want to do a sign, uh, permissions so that I'm able to access a file or folder.

But I may be may not want to be the specific the the user owner of that file folder.

One of the questions that ship can be asked is what groups am I a member of?

So if I simply use the group's command so the group's command absolutely nothing else and hit Enter.

So I am the Bob accounts that Bob is the initial count that's created when you create.

You bumped it when you install the U Bahn to server.

I'm in all the groups that are part of that.

I'm a member of the CD ROM's group, the pseudo group, because I could use Ooh d'oh dip plug, depth, Alexey.

So these are the members I am currently or these air the group's I am currently a member of.

But let's think about it for a second ago, huh?

I wonder what groups Tim is a member of or sue.

So if I use groups space and then simply whatever the user name is, let's say, Tim, the sooner I can see that Tim is a member of the Temple Group and he's a member of the test group.

If I do groups and then Chloe in Soo, see what she's a member off?

I can see that Sue is a member of the Sioux groups.

That's just the group that's created when her use your town is creative and also the test group.

So this is a way I can sit there and see what groups certain users are members off now.

An interesting thing also is there's actually a member's command that you can use now if you're going to use the members a command, at least on a bun to 18.4 Lt s you actually have to add it.

So you have to use pseudo at life and get install members.

But once you've installed it, you can actually see the members of groups.

So if I do members and then I simply do space and then let's say I do test group en er, then I can see the members of the group test group are Tim and Sue.

Linux - 更改文件和文件夾的權限和所有權（chmod, chown, members, groups）。 (Linux - Change Permissions and Ownership for Files and Folders (chmod, chown, members, groups ))

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Linux - 更改文件和文件夾的權限和所有權（chmod, chown, members, groups）。 (Linux - Change Permissions and Ownership for Files and Folders (chmod, chown, members, groups ))

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