From: Robert Klemme <shortcutter@...>
Date: 2009-12-11T19:35:29+09:00
Subject: Re: Redirecting standard output

2009/12/11 Robert Gleeson <rob@flowof.info>:
> Omar Campos wrote:
>> Thanks, that's exactly what I was looking for!  Nice gem by the way.  I
>> tried to "gem install" it, but I got a weird error message, don't
>> remember what it was.
>
> No need for a gem.

The gem was not needed for the redirection functionality but for
getting at information about the method.

> $stdout = File.new '/path/to/file', 'w'
> puts 'foobar'
> $stdout = STDOUT
> puts 'foobar'

This does only work for redirections of output for the particular
process.  It will fail in these cases

- sub processes started
- all entities which remembered $stdout instance (e.g. a logger)

Your last solution is better (although you do not necessarily need a
constant for that).  Btw, apparently you don't even need the mode -
that is inherited from the original.  So you can do:

$ ruby19 -e '$stderr.reopen("log"); $stderr.puts("foo")' ; cat log
foo
$ ruby19 -e '$stdin.reopen("log"); p gets'
"foo\n"
$

Cheers

robert

-- 
remember.guy do |as, often| as.you_can - without end
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