Get Fedora. It is almost like the core RH distro, maybe better.
Also, you can try out Oracle Linux. It is pretty much a rip-off of RH.
You can install Centos which is very similar to RedHat in terms of feature and stability. http://www.centos.org/
IFET College of Engineering
Universitas Stikubank Semarang
Mojtaba Madadi Asl
Institute for Advanced Studies in Basic Sciences
University of Ruhuna
James Van Damme
Hemprasad Y. Badgujar
Shri Guru Gobind Singhji Institute of Engineering and Technology