Launch Tailscale (with sudo)

setup-tailscale.sh

#!/bin/bash
# filepath: setup_tailscale.sh

# Function to check if a process is running
check_process() {
    pgrep -x "$1" >/dev/null
    return $?
}

# Function to install Tailscale
install_tailscale() {
    echo "Installing Tailscale..."
    # Add Tailscale's GPG key
    sudo mkdir -p --mode=0755 /usr/share/keyrings
    curl -fsSL https://pkgs.tailscale.com/stable/ubuntu/jammy.noarmor.gpg | sudo tee /usr/share/keyrings/tailscale-archive-keyring.gpg >/dev/null
    
    # Add the tailscale repository
    curl -fsSL https://pkgs.tailscale.com/stable/ubuntu/jammy.tailscale-keyring.list | sudo tee /etc/apt/sources.list.d/tailscale.list
    
    # Install Tailscale
    sudo apt-get update && sudo apt-get install -y tailscale
}

# Check if tailscale is installed
if ! command -v tailscale &> /dev/null; then
    install_tailscale
fi

# Check if tailscaled is running
if ! check_process "tailscaled"; then
    echo "Starting tailscaled..."
    sudo tailscaled &
    # Wait a moment for tailscaled to start
    sleep 2
fi

# Check if we're already authenticated
if ! tailscale status >/dev/null 2>&1; then
    echo "Connecting to Tailscale..."
    echo "Please authenticate using the link that will be displayed..."
    sudo tailscale up --advertise-exit-node --hostname rob
else
    echo "Tailscale is already connected"
    tailscale status
fi