rd<\/span>,<\/span> wr<\/span> =<\/span> IO<\/span>.<\/span>pipe<\/span><\/div> <\/div>
if<\/span> fork<\/span><\/div> wr<\/span>.<\/span>close<\/span><\/div> puts<\/span> "Parent got: <<\/span>#{<\/span>rd<\/span>.<\/span>read<\/span>}<\/span>>"<\/span><\/div> rd<\/span>.<\/span>close<\/span><\/div> Process<\/span>.<\/span>wait<\/span><\/div>else<\/span><\/div> rd<\/span>.<\/span>close<\/span><\/div> puts<\/span> "Sending message to parent"<\/span><\/div> wr<\/span>.<\/span>write<\/span> "Hi Dad"<\/span><\/div> wr<\/span>.<\/span>close<\/span><\/div>end<\/span><\/div> <\/div>
# Produces<\/span><\/div># Sending message to parent<\/span><\/div># Parent got: <Hi Dad><\/span><\/div># From: http://www.ruby-doc.org/docs/rdoc/1.9/classes/IO.html#M001074<\/span><\/div><\/pre><\/div>\n \n <\/div>\n\n