Hello.
Is it possible to make a user like root? I mean is that when a user exist in "sudoers" file then for management task "sudo" must used but is it possible without sudo?

Thank you.

Yes

http://lmgtfy.com/?q=create+a+second+root+user+linux

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It's possible in theory. What makes root root is simply having a UID of zero. There's nothing magical about the name. And it is possible for more than one user to have the same UID.

But it would be a crazy thing to do imho and I suspect most people here would agree with me.

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And of course you are absolutely correct, but we are dealing with someone who can't even do a simple web search. So I wouldn't be too concerned. I feel sorry for the people who's servers the OP is "managing"...

Hi,
To have multiple 'superusers' is living dangerously. I would even limit 'sudo' rights. One can have root privileges via 'su -' but that too can create administration nightmares. Admin should be handled by a single responsible root user so any changes can be tracked along with continuity for the systems. Injections by multiple 'root' can create mangled systems that will require someone to back things to normal.
Hope this helps.
Have fun & enjoy!

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I read once about a cracker (he called himself a "social engineer") who got into a company's server by phoning up the nightwatchman and asking him to "fix a minor problem" by entering the computer room and typing a line on the system console. It was something like:
Of course the man was only too happy to help out.

I think - but I cannot prove it - the admin user must be root and uid must be 0. So not only 0 (zero) is exceptional, but the word root too. With other words a user which has non-zero uid and its name is not root may fail sometimes, somewhere.
From the other hand using two entries with the same uid is illegal, will confuse the user management system (= the system will never know which one actually is in use).
But again, I think, I cannot really prove it.

You could still have a user that does have root permissions, it just wouldn't be the root user account itself.

I'm sorry, but I do not really understand what does it mean.

Sorry, I just didn't want to give the exact answer, so hopefully the OP learns to actually do web searches - yeah I know, wishful thinking on my part, but still...

Hint: you add to a user group... think what permissions that user group could have... (or what group that could be)

If they're running ubuntu (or Mint), maybe. Most other distributions do have a real superuser (even Debian) and their managers do not use sudo at all.
In fact, in the about 25 years I've been using Linux, this is the first PC I even installed (and set up) the sudo command at all, all of my previous systems never used it.

And all "professional" systems have a real administrator who knows the root passwd and normal users do NOT have sudo rights. At the university all administrative tasks to student PC's were done remotely (through a deployment agent) and NO-one could become root at all (it had a random generated password) on those systems.

As you may have noticed I'm a (retired now) system manager for Linux on a (Technical) University (Delft) and I was the one that introduced Linux in our group when PC's become powerfull enough (that was about with the 486) to replace Unix workstations.
I was the administrator of those Unix (HP and Sun) workstations before that.

So I've been following the evolution of Linux in general and Slackware in particular since the early 1990's.

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Having a single root user is traditional Unix and I have no quarrel with that. What is crazy is turning a normal user into a second root user.

Boom, now as long as you keep the terminal open you are root....Install, delete, modify the system as you wish.

Pretty sure the sudo part of that command is unnecessary and redundant. To become root and use the root user environment the command is simply I will add my voice to the recommendation that while it is possible to make a user with root-level privileges, it is a very bad idea to do so.

I'll ask to OP to explain why they want to do that...but I don't expect an answer...

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yes, using sudo and su together is definitely deprecated.

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