For example, you have only a root user for the super-user activities, but you wanted to use a custom user for some specific purposes. To make this, you might use "wheel" user group which is a special one for the "sudo" operations.
Action
sudo usermod -aG wheel alperadm
Check and Determine the Option:
$ sudo cat /etc/sudoers
## Allows people in group wheel to run all commands
# %wheel ALL=(ALL) ALL
## Same thing without a password
%wheel ALL=(ALL) NOPASSWD: ALL
$ cat /etc/group | grep wheel
wheel:x:10:root,alperadm
Test
$ cat /etc/sudoers
cat: /etc/sudoers: Permission denied
$ sudo cat /etc/sudoers
Worked!
