查看linux内核版本和发行版本

1.查看发行版本
[root@sdb1 ~]# lsb_release -a
LSB Version:    :base-4.0-amd64:base-4.0-noarch:core-4.0-amd64:core-4.0-noarch:graphics-4.0-amd64:graphics-4.0-noarch:printing-4.0-amd64:printing-4.0-noarch
Distributor ID:    CentOS
Description:    CentOS release 6.6 (Final)
Release:    6.6
Codename:    Final
或
[root@sdb1 ~]# cat /etc/redhat-release
CentOS release 6.6 (Final)

2.查看内核版本
[root@sdb2 ~]# uname -r
2.6.32-504.12.2.el6.x86_64
或
[root@sdb1 ~]# cat /proc/version
Linux version 2.6.32-504.12.2.el6.x86_64 (mockbuild@c6b9.bsys.dev.centos.org) (gcc version 4.4.7 20120313 (Red Hat 4.4.7-11) (GCC) ) #1 SMP Wed Mar 11 22:03:14 UTC 2015