$ cat /proc/version
Linux version 2.6.18-274.3.1.el5.028stab094.3 (root@rhel5-build-x64) (gcc version 4.1.2 20080704 (Red Hat 4.1.2-46)) #1 SMP Thu Sep 22 13:24:07 MSD 2011
$ cat /etc/issue
Ubuntu 10.10 \n \l