问题：通过lsb_release -a 是查看linux系统版本时报错,具体的解决办法如下：
[root@localhost ~]# lsb_release -a
-bash: lsb_release: command not found
解决方法：yum install redhat-lsb -y
安装完之后再查看版本信息：
[root@localhost upload]# 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 release 6.3 (Final)
Release: 6.3
Codename: Final
http://blog.itblood.com/lsb_release-command-not-found-solution.html
LSB是Linux Standard Base的缩写，lsb_release命令用来显示LSB和特定版本的相关信息。
lsb_release: command not found 解决方法(转)
原文：http://www.cnblogs.com/softidea/p/5269952.html