ls /etc/*release*
/etc/redhat-release /etc/system-release /etc/system-release-cpe
cat /etc/*release*
Red Hat Enterprise Linux Server release 6.4 (Santiago)
Red Hat Enterprise Linux Server release 6.4 (Santiago)
cpe:/o:redhat:enterprise_linux:6server:ga:server
ls /etc/*release*
/etc/redhat-release /etc/system-release /etc/system-release-cpe