Debian/Ubuntu下安装命令如下：
$ apt-get install -y whois
CentOS下安装命令如下
$ yum install -y whois
查询命令如下：
$ whois hannesgao.de
结果如下：
Domain: hannesgao.de Nserver: ns1035.ui-dns.de Nserver: ns1046.ui-dns.biz Nserver: ns1046.ui-dns.com Nserver: ns1112.ui-dns.org Status: connect Changed: 2017-07-06T13:14:17+02:00 [Tech-C] Type: ROLE Name: Hostmaster EINSUNDEINS Organisation: 1&1 Internet AG Address: Brauerstr. 48 PostalCode: 76135 City: Karlsruhe CountryCode: DE Phone: +49.7219600 Fax: +49.72191374248 Email: [email protected] Changed: 2012-12-10T20:50:22+01:00 [Zone-C] Type: ROLE Name: Hostmaster EINSUNDEINS Organisation: 1&1 Internet AG Address: Brauerstr. 48 PostalCode: 76135 City: Karlsruhe CountryCode: DE Phone: +49.7219600 Fax: +49.72191374248 Email: [email protected] Changed: 2012-12-10T20:50:22+01:00