Checking internet speed with the fast utility

fast is an open-source CLI utility written in Go that measures internet speed directly from the terminal. It runs on Fast.com — Netflix's speed testing infrastructure — which makes it useful for spotting whether your provider is throttling your connection.

Installation

Method 1. Download the binary

Download the binary, make it executable, and run it:

wget https://github.com/ddo/fast/releases/download/v0.0.4/fast_linux_amd64 -O fast
chmod +x fast
./fast

Expected output:

-> 39.11 Mbps

Method 2. Install system-wide

To run the utility from anywhere, install it to /usr/local/bin:

wget https://github.com/ddo/fast/releases/download/v0.0.4/fast_linux_amd64
sudo install fast_linux_amd64 /usr/local/bin/fast

Then simply run:

fast

Method 3. Install via Snap

If snapd is installed on your system:

snap install fast