Install cloudflared with a curl|bash

install_cloudflared.sh

#!/bin/bash

set -euxo pipefail

# Read over the script first, then run with:
# wget -qO- https://gist.githubusercontent.com/piperswe/82750ef642d71900ca770a98cbbdf72d/raw/install_cloudflared.sh | bash
# or
# curl https://gist.githubusercontent.com/piperswe/82750ef642d71900ca770a98cbbdf72d/raw/install_cloudflared.sh | bash

# It's rather unknown what versions are actually supported because
# pkg.cloudflare.com is in such a sorry state. I've tested to make sure
# each of these releases works (for cloudflared, at least).
# cloudflared isn't very picky (it's a statically linked Go binary), so
# we default to stretch if the current release isn't in this list since
# glibc is backwards-compatible
release="$(lsb_release -cs)"
if ! grep -Fxq "$release" <<EOF
# Ubuntu
focal
xenial
trusty

# Debian
bullseye
buster
stretch
EOF
then
	release=stretch
fi

echo "Installing cloudflared for $release"

echo "Enter your password for sudo:"
sudo echo

echo "deb [signed-by=/usr/share/keyrings/cloudflare-main.gpg] https://pkg.cloudflare.com/ $release main" | sudo tee /etc/apt/sources.list.d/cloudflare-main.list
wget -qO- https://pkg.cloudflare.com/cloudflare-main.gpg | sudo tee /usr/share/keyrings/cloudflare-main.gpg > /dev/null
sudo apt-get update
sudo apt-get install cloudflared

cloudflared version