Cmd to Know Info About OS

November 28, 2012
# uname -a 
Linux test01 2.6.18-238.el5 #1 SMP Thu Jan 13 15:51:15 EST 2011 x86_64 x86_64 x86_64

# cat /proc/version 
Linux version 2.6.18-238.el5 (mockbuild@builder10.centos.org) (gcc version 4.1.2 20080704 (Red Hat 4.1.2-48)) #1 SMP Thu Jan 13 15:51:15 EST 2011

# cat /etc/redhat-release 
CentOS release 5.6 (Final)