Lesson 8.4: Configure superuser access

[boss@sanjeeb etc]$ sudo visudo 
sanjeeb         ALL=(ALL)       NOPASSWD: ALL
boss            ALL=(ALL)       NOPASSWD: ALL
 
User_Alias      JUNIORADMINS=bharat,salesman1
Cmnd_Alias      LIMITEDCMD=/usr/sbin/useradd,/usr/bin/passwd
 
# To allow only LIMITEDCMD to the users
JUNIORADMINS    ALL=LIMITEDCMD
 
# To allow all commands except the LIMITEDCMD
JUNIORADMINS    ALL=ALL,!JUNIORADMINS
 
 
[bharat@sanjeeb ~]$ sudo useradd ram 
[bharat@sanjeeb ~]$ sudo passwd ram 
Changing password for user ram.
passwd: all authentication tokens updated successfully.
 

[root@sanjeeb ~]# usermod -aG wheel manager 
 
[manager@sanjeeb ~]$ sudo useradd man1 

# Create a file of the user's name in /etc/sudoers.d
[root@sanjeeb sudoers.d]# pwd
/etc/sudoers.d
[root@sanjeeb sudoers.d]# cat manager 
manager		ALL=(ALL)	NOPASSWD: ALL
 
[manager@sanjeeb ~]$ sudo useradd man3