3.9.3 is the kernel number. All Linux distributions use the Linux kernel, so Debian version X and CentOS version Y may use the same kernel as may Ubuntu version Z. There may be a list of CentOS versions and kernel numbers somewhere, but I can't see that it would be of great interest. My Ubuntu 13.10 shows 3.11.0 so you have a fairly old Ubuntu version there. In general the Ubuntu kernel will be newer than the more conservative CentOS/RHEL. Cheers Cliff On Thu, Dec 19, 2013 at 8:29 PM, Jayadevan Maymala < jayadevan.technology@xxxxxxxxx> wrote: > Hi, > I am using CentOS 6.4. > uname -r gives me > > 3.9.3-x86_64 Kernel version is 2.6.32. My questions - > > What is 3.9? In Ubuntu, uname -r and /boot give the same version numbers. > > Do we have a mapping of CentOS versions, the numbers like 3.9 and > kernel versions maintained somewhere? > > > Regards, > > Jayadevan > _______________________________________________ > CentOS mailing list > CentOS@xxxxxxxxxx > http://lists.centos.org/mailman/listinfo/centos > _______________________________________________ CentOS mailing list CentOS@xxxxxxxxxx http://lists.centos.org/mailman/listinfo/centos