How to create a User on a CentOS Server from SSH December 24, 2013 Dedicated Server Security SSH Tutorials VPS #centos The main user / administrator of a Linux server is root. Here is how you can create a new user on your CentOS server / VPS. Login to your server as root as run following command to create a new user named ravi. /usr/sbin/adduser ravi Now set password for new user ravi passwd ravi Screenshot Done!!