From: "W. James" <w_a_x_man@...>
Date: 2009-12-21T05:50:08+09:00
Subject: Re: How capture console error messge for logging?

Greg Willits wrote:

> OS X, Ruby 1.8
> 
> I've been searching & reading, but not finding (or perhaps just not
> understanding) how I can capture as a string the exact same error
> message text that would normally get dumped to Terminal.
> 
> So, if I write this to generate an error:
> 
>   puts "hello"
>   bogus_command
> 
> I'll get a file name, line number, and description of an error dumped
> to the Terminal.
> 
> How do I snag all that text so I can add it to a log file?
> 
> Obviously, I'd start with a begin/rescue and inside rescue I'd do
> something. I've fiddled with some examples I've seen but nothing is
> doing what I want. I just want that same text captured as a string
> into a variable I can then use however I want.
> 
> begin
>   puts "hello"
>   bogus_command
> rescue
>   # now what?
>   # I was hoping this would work
>   # x = $stderr.print
>   # but it doesn'truby -e"puts X" 2>data
> end
> 
> I'm sure it's some standard *nix thing, but I'm not getting it.
> 
> Thanks.
> 
> -- greg willits

ruby -e"puts X" 2>errors.log

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