From: Axel Etzold <AEtzold@...>
Date: 2008-05-27T07:37:50+09:00
Subject: Re: How to catch STDIO STREAM?


-------- Original-Nachricht --------
> Datum: Tue, 27 May 2008 07:21:55 +0900
> Von: Cheyne Li <happy.go.lucky.clr@gmail.com>
> An: ruby-talk@ruby-lang.org
> Betreff: Re: How to catch STDIO STREAM?

> Thank you for your information. I tried, but it only give me result like 
> #<IO:0xf60e8>
> 
> So, is there a way to convert it into string?
> 



Dear Cheyne,

yes, there is. Use readlines, like this:


-------------------------------
require "open3"

filenames=%w[file1 file2 file3]
inp,out,err=Open3.popen3("xargs","ls","-l")

filenames.each{|f|  inp.puts f}
inp.close

output=out.readlines
errout=err.readlines

puts "sent #{filenames.size} lines of input"
puts "got back #{output.size} lines of output"
puts "these were the errors, if any:"
puts errout
-----------------------------------

Best regards,

Axel 






> 
> Axel Etzold wrote:
> > -------- Original-Nachricht --------
> >> Datum: Tue, 27 May 2008 06:52:55 +0900
> >> Von: Cheyne Li <happy.go.lucky.clr@gmail.com>
> >> An: ruby-talk@ruby-lang.org
> >> Betreff: How to catch STDIO STREAM?
> > 
> >> -- 
> >> Posted via http://www.ruby-forum.com/.
> > 
> > Dear Cheyne,
> > 
> > have a look at this:
> > 
> > http://www.ruby-doc.org/stdlib/libdoc/open3/rdoc/index.html
> > 
> > Best regards,
> > 
> > Axel
> 
> -- 
> Posted via http://www.ruby-forum.com/.

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