How to catch SIGINT and SIGTERM signals in Ruby

signal_catching.rb

# Signal catching
def shut_down
  puts "\nShutting down gracefully..."
  sleep 1
end

puts "I have PID #{Process.pid}"

# Trap ^C 
Signal.trap("INT") { 
  shut_down 
  exit
}

# Trap `Kill `
Signal.trap("TERM") {
  shut_down
  exit
}