make redhat use centos repos

 [root@satan ~]# yum install traceroute  
 Loaded plugins: rhnplugin, security  
 This system is not registered with RHN.  
 RHN support will be disabled.  
 Setting up Install Process  
 No package traceroute available.  
 Nothing to do 
 
 [root@satan ~]#  

 well flock.  

 [root@satan ~]# cat /etc/redhat-release  

 RedHat Enterprise Crap 6.crap  

 yes. redhat. not centos. let's use centos for yum, shall we?  

 [root@satan ~]# vi /etc/yum.repos.d/centos.repo  

 [centos]  
 name=CentOS $releasever - $basearch  
 baseurl=http://ftp.heanet.ie/pub/centos/6/os/$basearch/  
 enabled=1  
 gpgcheck=0  

 nb: after centos place 5 or 6 depending on major version of RHEL.  

 [root@satan ~]# yum install traceroute 

 stuff happens...