I don't know why.

stupid.rb

#!/usr/bin/env ruby

# The Xcode prefix for C stuff.
PREFIX = `xcrun --show-sdk-path`.chomp

# Ze masterpiece.

def have_a_nap
  puts "Le 💤 "
  pause
end

def fire_ze_missiles
  puts "🔥 ze 🚀"
end

# wtf...?
def pause
  # See: man 2 sigsuspend
  num = find_syscall :sigsuspend
  sigmask = 0
  syscall(num, sigmask)
end

def find_syscall(name)
  filename = File.join PREFIX, '/usr/include/sys/syscall.h'
  line = File.open filename do | file |
    file.grep(/#{name}/).first
  end
  # Don't use #to_i so that conversion can fail instead of returning 0.
  Integer(line[/\s\d+/])
end

begin
  have_a_nap
ensure
  fire_ze_missiles
end