Linux系统查看系统版本命令

以下操作在centos系统上实现，有些方式可能只适用centos/redhat版本系统

uname -a |uname -r查看内核版本信息

[root@node1 ~]# uname -a
Linux node1 2.6.32-573.el6.x86_64 #1 SMP Thu Jul 23 15:44:03 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux
[root@node1 ~]# uname -r
2.6.32-573.el6.x86_64
2. cat /proc/version 查看内核版本gcc版本linux

[root@node1 ~]# cat /proc/version
Linux version 2.6.32-573.el6.x86_64 (mockbuild@c6b9.bsys.dev.centos.org) (gcc version 4.4.7 20120313 (Red Hat 4.4.7-16) (GCC) ) #1 SMP Thu Jul 23 15:44:03 UTC 2015

3. lsb_release -a 列出所有版本信息，查看系统发行版本信息，centos版本如果没有此命令可以执行yum install lsb安装linux
[root@node1 ~]# 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 6.7 (Final)
Release: 6.7
Codename: Final

4. cat /etc/issue 查看系统版本linux
[root@node1 ~]# cat /etc/issue
CentOS release 6.7 (Final)
Kernel \r on an \m

5. centos系统执行cat /etc/redhat-release 查看系统版本信息linux
[root@node1 ~]# cat /etc/redhat-release
CentOS release 6.7 (Final)
6. 执行 getconf LONG_BIT可以查看linux系统位数linux
[root@node1 ~]# getconf LONG_BIT