Creating a super user with root rights

Sudo is a program which can be used by normal users to execute programs as super user or any other user. Sudo access is controlled by /etc/sudoers. The users listed in /etc/sudoers file can execute commands with an effective user id of 0 and a group id of root's group.

The file '/etc/sudoers' should be edited with the editor "visudo".

01. First, create a user called "uddika"
[root@daddylinux~]#useradd uddika
[root@daddylinux~]#passwd uddika

02. To give a specific group of users limited root privileges, edit the file with visudo as follows:
[root@daddylinux~]# visudo

03. Go down to the line ‘# User privilege specification‘and add the following line.
uddika ALL=(ALL) ALL
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9 comments:

  1. AnonymousJune 2, 2012 at 6:51 PM

    This doesn't seem to actually work on CentOS 6.2. If you think it does, please publish keystroke-by-keystroke directions for running on a vanilla system.

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    Replies
    1. UnknownJuly 19, 2012 at 1:15 AM

      Definitely agree with you. A vanilla install of CentOS 6.2 doesn't seem to have a "sudoers" file in /etc/ as is indicated above. And the visudo command doesn't work - presumably for a related reason.

      Delete
  2. MrGuvernmentOctober 4, 2012 at 9:02 PM

    yum install sudo -y

    then it works

    ReplyDelete
  3. AnonymousOctober 24, 2012 at 8:42 PM

    Hellooo...the very fact these fellows cannot be listed in the sudoers file means they cannot perform any task on a console. Why? Because your command does nothing unless 'sudo' is in front AND it then asks for your p/w which - when typed in - gets the response that you're not listed in sudoers file! Round and round we go.

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  4. AnonymousNovember 4, 2012 at 9:56 AM

    he meant run the command as root...

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  5. AnonymousJanuary 17, 2013 at 11:49 AM

    set the UID:GUD bits to 0:0 in /etc/passwd always works.
    Say for example the new user is 'spider', then the line in passwd file should look like:

    spider:x:0:0::/home/spider:/sbin/nologin

    ReplyDelete
  6. UnknownMarch 25, 2013 at 1:21 PM

    its nice..but i want to be add multiple users in visudo file...act like root user....what i will do?

    ReplyDelete
  7. TUPACALYPSE187May 9, 2013 at 12:48 AM

    first enter su -
    put in the password used during installation
    input above commands
    visudo should now work as well

    ReplyDelete
  8. AnonymousJanuary 27, 2014 at 6:04 PM

    pidarasnja ne pokazivajuwaja kommenti...

    ReplyDelete

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