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