1 files changed, 48 insertions, 0 deletions
diff --git a/sample/pty/expect_sample.rb b/sample/pty/expect_sample.rb
new file mode 100644
index 0000000000..d3b072b83c
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+++ b/sample/pty/expect_sample.rb
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+#
+# sample program of expect.rb
+#
+#  by A. Ito
+#
+#  This program reports the latest version of ruby interpreter
+#  by connecting to ftp server at ruby-lang.org.
+#
+require 'pty'
+require 'expect'
+
+fnames = []
+PTY.spawn("ftp ftp.ruby-lang.org") do |r_f,w_f,pid|
+  w_f.sync = true
+
+  $expect_verbose = false
+
+  if !ENV['USER'].nil?
+    username = ENV['USER']
+  elsif !ENV['LOGNAME'].nil?
+    username = ENV['LOGNAME']
+  else
+    username = 'guest'
+  end
+
+  r_f.expect(/^(Name).*: |(word):|> /) do
+    w_f.puts($1 ? "ftp" : $2 ? "#{username}@" : "cd pub/ruby")
+  end
+  r_f.expect("> ") do
+    w_f.print "dir\n"
+  end
+
+  r_f.expect(/[^\-]> /) do |output|
+    for x in output[0].split("\n")
+      if x =~ /(ruby.*?\.tar\.gz)/ then
+         fnames.push $1
+      end
+    end
+  end
+  begin
+    w_f.print "quit\n"
+  rescue
+  end
+end
+
+print "The latest ruby interpreter is "
+print fnames.sort.pop
+print "\n"