查看 Linux 系统版本命令

查看 Linux 系统版本命令

1. cat /etc/issue

2. cat /etc/redhat-release

3. lsb_release -a

实例：

[root@iZ11k ~]# cat /etc/issue
 CentOS release 6.5 (Final)
 Kernel \r on an \m

[root@iZ11k ~]# cat /etc/redhat-release
CentOS release 6.5 (Final)

[root@iZ11k ~]#  lsb_release -a
LSB Version:    :base-4.0-amd64:base-4.0-noarch:core-4.0-amd64:core-4.0-noarch
Distributor ID: CentOS
Description:    CentOS release 6.5 (Final)
Release:        6.5
Codename:       Final
​

[root@iz ~]# cat /etc/issue
\S
Kernel \r on an \m

[root@iz ~]# cat /etc/redhat-release
CentOS Linux release 7.3.1611 (Core)

[root@iz ~]#  lsb_release -a
LSB Version:    :core-4.1-amd64:core-4.1-noarch
Distributor ID: CentOS
Description:    CentOS Linux release 7.3.1611 (Core)
Release:        7.3.1611
Codename:       Core
​

[root@sv ~]# cat /etc/issue
\S
Kernel \r on an \m

[root@sv ~]# cat /etc/redhat-release
CentOS Linux release 7.2.1511 (Core)
[root@sv ~]#  lsb_release -a
LSB Version:    :core-4.1-amd64:core-4.1-noarch
Distributor ID: CentOS
Description:    CentOS Linux release 7.2.1511 (Core)
Release:        7.2.1511
Codename:       Core
​

[root@mai ~]# cat /etc/issue
\S
Kernel \r on an \m

[root@mai ~]# cat /etc/redhat-release
CentOS Linux release 7.2.1511 (Core)
[root@mai ~]#  lsb_release -a
-bash: lsb_release: command not found
[root@mai ~]# yum install redhat-lsb -y
....
​

分析：
​

• cat /etc/issue 不适用 centos7

• cat /etc/redhat-release 只适用于 Redhat 系列的 linux

• lsb_release -a 需要安装该工具才可以使用 ，安装命令 yum install redhat-lsb -y

补充一个一键测试脚本

脚本来源：Bench.sh

可以使用以下命令来查看您的 Linux 系统信息，还可以测试网络带宽及硬盘读写速率

wget -qO- bench.sh | bash
#或者 
curl -Lso- bench.sh | bash
​

上个运行结果图：

备注：
bench.sh 既是脚本名，同时又是域名。
感谢 @alanfans 提供