$ lsb_release -a
LSB Version:    n/a
Distributor ID: Gentoo
Description:    Gentoo Base System release 2.0.3
Release:    2.0.3
Codename:   n/a

$ 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