File: getpid.rb

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ruby-ffi 1.12.2%2Bdfsg-2
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require 'rubygems'
require 'ffi'
module Foo
  extend FFI::Library
  ffi_lib FFI::Library::LIBC
  attach_function :getpid, [ ], :int
end
puts "My pid=#{Foo.getpid}"