# uname -a Linux dev4.internal 2.6.21.7-2.fc8xen #1 SMP Fri Feb 15 12:39:36 EST 2008 i686 athlon i386 GNU/Linux
# cat /etc/issue CentOS release 5.6 (Final) Kernel \r on an \m
# uname -a
Linux dev4.internal 2.6.21.7-2.fc8xen #1 SMP Fri Feb 15 12:39:36 EST 2008 i686 athlon i386 GNU/Linux
# cat /etc/issue
CentOS release 5.6 (Final)
Kernel \r on an \m