$lsb_release -a #Ubuntu下执行
Distributor ID: Ubuntu
Description: Ubuntu 16.04.2 LTS
Release: 16.04
Codename: xenial
$cat /etc/redhat-release #CentOS下执行
CentOS Linux release 7.3.1611 (Core)
$lsb_release -a #Ubuntu下执行
Distributor ID: Ubuntu
Description: Ubuntu 16.04.2 LTS
Release: 16.04
Codename: xenial
$cat /etc/redhat-release #CentOS下执行
CentOS Linux release 7.3.1611 (Core)