ex17 extra credit #3

ex17-ec.rb

@@ -1,23 +1,5 @@
-
-from_file, to_file = ARGV
-script = $0
-
-puts "Copying from #{from_file} to #{to_file}"
-
-# we could do these two on one line too, how?
-input = File.open(from_file)
-indata = input.read()
-
-puts "The input file is #{indata.length} bytes long"
-
-puts "Does the output file exist? #{File.exists? to_file}"
-puts "Ready, hit RETURN to continue, CTRL-C to abort."
-STDIN.gets
-
-output = File.open(to_file, 'w')
-output.write(indata)
-
-puts "Alright, all done."
-
-output.close()
-input.close()
+File.open(ARGV.first) do |infile|
+  File.open(ARGV[1], 'w') do |outfile|
+    outfile.write(infile.read)
+  end
+end