From: Roger Pack <rogerpack2005@...>
Date: 2009-12-10T23:48:45+09:00
Subject: Re: Redirecting standard output

Omar Campos wrote:
> Hi all,
> 
>   Is there a way to redirect the standard output, so that command like
> puts write to a file instead of the console?

Using this as a way to shamelessly promote my 'desc_method' gem... :)


>> $stdout.methods
=> [:reopen, :print, ...]
>> require 'desc_method'
=> true
>> $stdout.desc_method :reopen
sig: #<Method: IO#reopen>      arity: -1
appears to be a c method
searching ri for IO#reopen...
-------------------------------------------------------------- IO#reopen
     ios.reopen(other_IO)         => ios
     ios.reopen(path, mode_str)   => ios

     From Ruby 1.9.1
------------------------------------------------------------------------
     Reassociates _ios_ with the I/O stream given in _other_IO_ or to a
     new stream opened on _path_. This may dynamically change the actual
     class of this stream.

        f1 = File.new("testfile")
        f2 = File.new("testfile")
        f2.readlines[0]   #=> "This is line one\n"
        f2.reopen(f1)     #=> #<File:testfile>
        f2.readlines[0]   #=> "This is line one\n"

(end ri)
=> "#<Method: IO#reopen>"
>> $stdout.reopen("abc", "w")

Enjoy
-r
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