Objective:
Add a new local administrative user to a CentOS 7 machine.
Steps:
1. Add the new user "JohnDoe":
# useradd -m johndoe -d /home/johndoe
2. Add user to wheel group
(assuming wheel is in the /etc/sudoers file for sudo access)
# gpasswd -a johndoe wheel
3. Give user stating password
# gpasswd johndoe
> enter1reallyH@rdPwdas@%!@%#@%
> enter1reallyH@rdPwdas@%!@%#@%
4. Have user login and test
johndoe $ sudo uname -r
> enter1reallyH@rdPwdas@%!@%#@%
<release of linux is displayed>
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