How to check os version in Linux command line

 1. Check the Linux kernel version command (two methods):

1、cat /proc/version

[root@S-CentOS home]# cat /proc/version

Linux version 2.6.32-431.el6.x86_64 (mockbuild@c6b8.bsys.dev.centos.org) (gcc version 4.4.7 20120313 (Red Hat 4.4.7-4) (GCC) ) #1 SMP Fri Nov 22 03:15:09 UTC 2013

2、uname -a

[root@S-CentOS home]# uname -a

Linux S-CentOS 2.6.32-431.el6.x86_64 #1 SMP Fri Nov 22 03:15:09 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux

Second, the command to view the Linux system version (3 methods):

1. lsb_release -a, you can list all version information:

[root@S-CentOS ~]# 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- angry

Distributor ID: CentOS

Description: CentOS release 6.5 (Final)

Release: 6.5

Codename: Final

This command works on all Linux distributions, including RedHat, SUSE, Debian… etc.

2. cat /etc/redhat-release, this method is only suitable for Redhat Linux:

 [root@S-CentOS home]# cat /etc/redhat-release

CentOS release 6.5 (Final)

3. cat /etc/issue, this command also applies to all Linux distributions.

[root@S-CentOS home]# cat /etc/issue

CentOS release 6.5 (Final)

Kernel \r on an \m

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