はじめに CentOS 6をminimalインストールすると、デフォルトではDNS名前解決テスト用のdig,nslookup,hostコマンドがインストールされていません。 [root@example-CentOS-6 ~]# which host /usr/bin/which: no host in (/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin) [root@example-CentOS-6 ~]# which dig /usr/bin/which: no dig in (/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin) [root@example-CentOS-6 ~]# which nslook
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