Kill thread that spawned a process

gistfile1.rb

t = Thread.new do
  pid = Process.fork do
   loop do
     puts "Hi"
     sleep 0.5
   end
  end
  puts "Use 'kill -9 #{pid}' to kill me!"
  Process.wait pid  
end
 
sleep 2
t.kill
 
 
# And it keeps running...