From: Diego Algorta Casamayou <ruby@...4ward.com>
Date: 2006-01-20T01:38:10+09:00
Subject: Re: Unable to write to file... (example from "pickaxe book", second edition, p128)

Jacob Fugal escribi�:
> On 1/19/06, Diego Algorta Casamayou <ruby@dac.e4ward.com> wrote:
>> Change
>>  >>> File.open("testfile", "r") do |file|
>> to
>>  >>> File.open("testfile", "w") do |file|
> 
> Well you need more than that. For one thing the file.gets will fail if
> file was opened in write mode. Also the puts is going to STDOUT, not
> the file. You probably want something like this:
> 
> #!/usr/bin/ruby
> File.open("testfile", "w") do |file|
>   while line = gets
>     file.puts line
>   end
> end
> 
> This will get input from STDIN and write it out to test file. Program
> terminates on EOF marker (CTRL-D when run interactively).

That's right. I focused my reply on on the open method, but missed the 
full example.

Diego