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1 files changed, 14 insertions, 0 deletions

diff --git a/code/snippets/spawn_open3_eg.rb b/code/snippets/spawn_open3_eg.rb
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+++ b/code/snippets/spawn_open3_eg.rb
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+# This is available as part of the standard library.
+require 'open3'
+
+Open3.popen3('grep', 'data') { |stdin, stdout, stderr|
+  stdin.puts "some\ndata"
+  stdin.close
+  puts stdout.read
+}
+
+# Open3 will use Process.spawn when available. Options can be passed to 
+# Process.spawn like so:
+Open3.popen3('ls', '-uhh', :err => :out) { |stdin, stdout, stderr|
+  puts stdout.read
+}