I have learnt the OS in 2011 and got used to it with my each progress. The best part is we can use the system easily as a server and client simultaneously and also configure easily the ftp and http service for the file sharing and network access.
The terminal basically being the graphical way of communication and we can get the files and setups by tying the commands. User and view the no. of users in the system by typing the command /etc/passwd.
The kernel is well configured and the system is secured from malware and virus attack because of the selinux and the iptables. Happy to be a user of Red Hat Linux.