如何解决centos报错lsb_release: command not found？

lsb_release 是查看系统版本信息的工具，在使用的时候突然出现报错lsb_release: command not found？

[root@localhost ~]# lsb_release -a
-bash: lsb_release: command not found

解决方法：yum install redhat-lsb -y
[root@localhost ~]# lsb_release  -a
LSB Version:    :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 Linux release 6.0 (Final)
Release:        6.0
Codename:       Final