Lesson 8.4: Configure superuser access
Their are various ways to provide superuser access .
Method I : Modify visudo
[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.
Method II: Adding a user to the 'wheel' group usermod -a -G wheel user will effectively give him superuser access
[root@sanjeeb ~]# usermod -aG wheel manager [manager@sanjeeb ~]$ sudo useradd man1
Method III:
# 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