Check system version and linux kernel

First, view the version of Linux system command (3 methods)

1, applies to all Linux distributions

cat /etc/issue

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

　　CentOS release 6.5 (Final)
　　Kernel \r on an \m

2, only for Linux Redhat lines:

cat /etc/redhat-release

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

　　CentOS release 6.5 (Final) 

3, listing all the version information:

lsb_release -a

　　[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-noarch
　　Distributor ID: CentOS
　　Description: CentOS release 6.5 (Final)
　　Release: 6.5
　　Codename: Final

　　 lsb_release command to install:

yum -y install redhat-lsb

 

Second, see Linux kernel version:

1、cat /proc/version

　　[root@S-CentOS home]# cat /proc/version
　　Linux version 2.6.32-431.el6.x86_64 ([email protected]) (gcc version 4.4.7 20120313 (Red Hat 4.4.7-4) (GCC) ) #1 SMP Fri Nov 22 03:15:09 UTC 2017

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 2017 x86_64 x86_64 x86_64 GNU/Linux