asked on

Linux OS

I need to know about the user "root"
is he only a super user or also can be a group, and other user can be part of root group,

Thanks

ASKER CERTIFIED SOLUTION

redcelltech

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Tintin

Minor correction to the very good summary that redceltech gave:

"Users placed in this group assume root level privileges."

should read

"Users placed in this group assume *some* root level privileges."

Being in the root group does not give you all the rights as the root user.

redcelltech

Agreed, nice pick up!

usmbay

ASKER

so I can edit group file to remove user from this group right??

redcelltech

yes.

usmbay

ASKER

I found this record in the file

username:x:506

what's x and 506 mean,

redcelltech

One other thing to note about the root group. Users with this membership can su or switch user to the root account, that is if they know the password.

redcelltech

506 is the group number. Check the group file and search for 506 (/506 in vi), most likely it is a group created when the user was added. The group number to monitor is 0. x is the password column.

redcelltech

x is shown if shadow passwords are in use

usmbay

ASKER

Thanks that was clear

robertfwoods

I agree with redcelltech strong passwords are a requirement.

Read about Robert Moore. Google "interview Robert Moore" or:
https://informationweek.com/news/showArticle.jhtml?articleID=202101781

Four critical points:
Default passwords
Monitor the logs
Intrusion Detection
Access control lists

6,000,000 computers scanned in 5 months. Was yours one?