Change DNS server in Ubuntu Command Line

本篇指南詳細解說 Ubuntu Desktop 與 Server 的網路連線、固定 IP 設定、DNS 變更、Wi-Fi 與 VPN 連線方法，並附常見問題解答與實用指令。

介紹如何修改Linux的DNS伺服器連線，以Ubuntu為例。 需要系統版本：Ubuntu 24.04以上。

The first step is to always check, and note down the currently used DNS Servers – in case the change in DNS Server does not result in intended changes. To show the current DNS servers that are being used per interface, use the 'resolvectl' command

一般上在 Linux 下要設定 DNS 伺服器, 只要修改 /etc/reslov.conf 檔案便可以, 但在 Ubuntu 開啟 /etc/reslov.conf 時, 卻出現用註解表示的警告: 那便表示不可以直接改 /etc/resolv.conf, 因為 Ubuntu 每次開機都會會將修改的內容覆蓋, 要使修改永久生效, 需要修改檔案 /etc/network/interfaces, 先開啟 /etc/network/interfaces: 加入以下一行設定 DNS Server, 以下是 Goo

以往在CentOS環境，設定DNS只要修改/etc/resolv.conf即可，但在Ubuntu 22.04中，預設的 DNS 解析器是systemd-resolved，因此如果直接修改/etc/resolv.conf雖仍可以 ...

Learn how to set DNS nameservers on Ubuntu. This guide explains several methods, including GUI and command-line interface approaches.

In a Linux Ubuntu system, proper DNS configuration is crucial for network connectivity and efficient web browsing. This blog post will provide a detailed overview of DNS settings in Ubuntu, including fundamental concepts, usage methods, common practices,