Create a new opc user with elevated privileges on Oracle Linux 8.x

There are two ways to create a new user (say “opc” ) and add sudo permissions to it:

Option 1 :

[oracle@linux ~]$ su
Password: 

[root@linux home]# useradd opc

[root@linux home]# passwd opc
Changing password for user opc.
New password: 
Retype new password: 
passwd: all authentication tokens updated successfully.

[root@linux home]# visudo

// Add the following entry : (To allow a user to run all commands without a password)

opc ALL=(ALL) NOPASSWD: ALL

Modified /etc/sudoers file :

Option 2:

[oracle@linux ~]$ su
Password: 

[root@linux home]# useradd opc

[root@linux home]# passwd opc
Changing password for user opc.
New password: 
Retype new password: 
passwd: all authentication tokens updated successfully.

[root@linux home]# usermod -aG wheel opc

[root@linux home]# visudo

// uncomment the following line : (To allow a user to run all commands without a password)

%wheel ALL=(ALL) NOPASSWD: ALL

Modified /etc/sudoers file :