Shell script to download the most recent version of headscale for your platform and architecture

download-headscale.sh

#!/usr/bin/env -S bash -l

set -e

OS="";
if [[ "$OSTYPE" == "linux-gnu"* ]]; then
	OS="linux";
elif [[ "$OSTYPE" == "darwin"* ]]; then
	OS="darwin";
elif [[ "$OSTYPE" == "freebsd"* ]]; then
	OS="freebsd";
else
	echo "unsupported os $OSTYPE";
	exit 1;
fi

ARCH="$(dpkg --print-architecture)"
if ! [[ "$ARCH" =~ ^(amd64|arm64)$ ]]; then
	echo "unsupported arch $ARCH";
	exit 1;
fi

releases=$(curl -sSf "https://api.github.com/repos/juanfont/headscale/releases")
if [[ $? -ne 0 ]]; then
	echo "Error getting GitHub releases";
	exit 1;
fi

tag_name=$(jq -r 'first(.[] | [select (.prerelease == false)][]).tag_name' <<< "$releases")
deb_url=$(jq -r 'first(.[] | [select (.prerelease == false)][]).assets[] | select(.browser_download_url | endswith('"\"${OS}_$ARCH"'.deb")).browser_download_url' <<< "$releases")

echo "Latest release: $tag_name";

if [[ -z $deb_url ]]; then
	echo "No .deb available for ${OS}_$ARCH";
	exit 0;
fi

wget -q --output-document="headscale-$tag_name.deb" "$deb_url";
if [[ $? -ne 0 ]]; then
	echo "Download failed!";
	exit 1;
fi

echo "headscale-$tag_name.deb downloaded.";