switchdns

A terminal-based tool to easily switch your system DNS servers on Linux.

Features

• Interactive terminal UI for selecting DNS providers
• Built-in list of popular DNS providers (Cloudflare, Google, Quad9, OpenDNS, CleanBrowsing, Shecan, Electro, Begzar)
• Option to reset to automatic/ISP DNS
• Add your own custom DNS providers via a config file
• Displays current DNS settings
• Automatically requests root privileges if needed

Installation

You need Rust installed.

Install from crates.io:

cargo install switchdns

Or build manually from source:

cargo build --release

The binary will be at target/release/switchdns.

Usage

Run the tool:

switchdns

• If not run as root, the tool will automatically prompt for root privileges.
• Use the arrow keys to navigate the DNS provider list
• Press Enter to select and apply a DNS provider
• Press r to reset to automatic/ISP DNS
• Press q to quit

Custom DNS Providers

You can add your own DNS providers by creating a file named .switchdns in your home directory. Each line should be in the format:

Provider Name | 1.2.3.4 | 5.6.7.8

Example:

MyDNS | 123.45.67.89 | 98.76.54.32

How it works

• Modifies /etc/resolv.conf to set the selected DNS servers
• Reads current DNS from /etc/resolv.conf
• Uses ratatui and crossterm for the terminal UI

License

MIT

© 2025 Mahyar Riazati