lsb_release -a

LSB Version: :core-4.0-ia32:core-4.0-noarch:graphics-4.0-ia32:graphics-4.0-noarch:printing-4.0-ia32:printing-4.0-noarch Distributor ID: CentOS Description: CentOS release 5.7 (Final) Release: 5.7 Codename: Final

这个命令适用于所有遵守LSB规范的的linux，包括Redhat、SuSE、Debian、Ubuntu、Centos等发行版。