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--- !ruby/object:RI::MethodDescription 
aliases: []

block_params: 
comment: 
- !ruby/struct:SM::Flow::P 
  body: Returns the process ID of a child process associated with <em>ios</em>. This will be set by <tt>IO::popen</tt>.
- !ruby/struct:SM::Flow::VERB 
  body: "   pipe = IO.popen(&quot;-&quot;)\n   if pipe\n     $stderr.puts &quot;In parent, child pid is #{pipe.pid}&quot;\n   else\n     $stderr.puts &quot;In child, pid is #{$$}&quot;\n   end\n"
- !ruby/struct:SM::Flow::P 
  body: <em>produces:</em>
- !ruby/struct:SM::Flow::VERB 
  body: "   In child, pid is 26209\n   In parent, child pid is 26209\n"
full_name: IO#pid
is_singleton: false
name: pid
params: |
  ios.pid    => fixnum

visibility: public