红帽：
# cat /etc/redhat-release
Red Hat Enterprise Linux Server release 6.4 (Santiago)
通用：
cat /etc/issue && uname -a
# cat /etc/issue && uname -a
Red Hat Enterprise Linux Server release 6.4 (Santiago)
Kernel
on an m
Linux DXAL-GED-CMS1 2.6.32-358.el6.x86_64 #1 SMP Tue Jan 29 11:47:41 EST 2013 x86_64 x86_64 x86_64 GNU/Linux