# uname -a Linux host 2.6.32-71.el6.x86_64 #1 SMP Fri May 20 03:51:51 BST 2011 x86_64 x86_64 x86_64 GNU/Linux # cat /etc/redhat-release CentOS Linux release 6.0 (Final) #yum update kernel #yum update centos-release # cat /etc/redhat-release CentOS release 6.4 (Final) # uname -a Linux sjc3-nt2-nsdv01 2.6.32-358.23.2.el6.x86_64 #1 SMP Wed Oct 16 18:37:12 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux