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Linux user Privileges

Posted on 2014-02-10
Medium Priority
Last Modified: 2014-02-11
Linux user Privileges

In windows domain, you can have enterprise Admins, Domain Admins, Account operators, print operators,etc...

I wonder what is the equivalent in Linux (ubuntu)

Thank you
Question by:jskfan
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LVL 10

Assisted Solution

stu215 earned 664 total points
ID: 39848701
Ubuntu User Management:

Ubuntu File Permissions:

Ubuntu General System Mgt:

Generally you would setup groups and then apply the group to a set of files, and then add users to those groups which would restrict access to files by a group.

NOTE: see the file permissions link above as you have to explicitly set what permissions you would like the group to have on a particular set of files / folders / etc.

Author Comment

ID: 39848739
For instance Sudoers..
Are all users added to Sudoers file have the same privileges as Root user
LVL 10

Assisted Solution

stu215 earned 664 total points
ID: 39848764
Adding a user to the sudoers file is giving the user a way to execute things as though they were the root user ( or a specified user ) but without allowing them to login as root.

Depeding on how its configured they should be prompted to enter a "sudo" password in order to execute the command they would like executed.

- You can setup different levels of users which can execute certain commands.

This explains it a bit better:
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LVL 21

Assisted Solution

Mazdajai earned 668 total points
ID: 39849250
There is no equivalent roles in  Ubuntu / Linux.

The only "admin" in Linux is root. The fore mention sudoers is similar as "Run As Administrator" in Windows but it is nowhere near root privileges.

man sudo

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LVL 13

Assisted Solution

Sandy earned 332 total points
ID: 39849322
No it is not... Linux uses FLAT user db... not schema based. Linux has group called root, sys, operator ...

can be checked under /etc/group

LVL 30

Assisted Solution

serialband earned 336 total points
ID: 39850457
Mazdajai is incorrect.

As stu215 mentioned, if you have your sudo account set to run as full root, you are fully root.  Accounts can be set with limited privileges if you want.

Without sudo, you have root (admin) and non-root (users) accounts and groups to differentiate permissions as Sandy mentioned.  It's same same as how groups works in Windows.

Author Comment

ID: 39851503
in windows you have Administrator at  the domain level (Domain Admin)
you have Administrator on the local server only.
you have power users and you have just regular users that cannot download or execute certain commands.

in Linux you have Root at the domain level , assuming we are using LDAP) and there is Root user on each server, I am not sure about the equivalent of powers users, account operators, print operators, backup operators, etc... in Linux.

it sounds like in Linux you can be either Root or regular user nothing in between...
LVL 21

Accepted Solution

Mazdajai earned 668 total points
ID: 39851687
...Without sudo, you have root (admin) and non-root (users) accounts and groups to differentiate permissions as Sandy mentioned.  It's same same as how groups works in Windows.

Incorrect and disagree are two different terms. I will never say the groups works the same in  Windows vs Linux.

You can assign user rights to restart the server in Linux (not shutdown) but you can't in Windows. Why?

Group is merely a container in Linux, you can use username and never touch /etc/group in sudoer. (Bad practice but doable) On the other hand, Domain Admin and Schema Admin are predefined groups that cannot be substituted. Why?

Because they are fundamental two different type of operating systems. Linux design secure in mind whereas Windows design to be ease of use.

Author Closing Comment

ID: 39851899
Thank you

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