From: Trey Campbell <drtrey@...>
Date: 2003-12-19T07:11:13+09:00
Subject: Re: question about I/O and pipes

Robert Klemme wrote:

>"Jean-Baptiste" <temuphaey0@jetable.net> schrieb im Newsbeitrag
>news:3fe187d2$0$7163$626a54ce@news.free.fr...
>  
>
>>There is a  (very) little programm (count.rb) which count lines:
>>
>>cnt = 0
>>$stdin.each_line {|line| cnt = cnt + 1 }
>>print cnt,"\n"
>>
>>
>>Now I want to use it whith pipes like this:
>>dir | count
>>but i got this error
>>C:\ruby>dir | count
>>C:/ruby/count.rb:3:in `each_line': Bad file descriptor (Errno::EBADF)
>>         from Z:/ruby/count.rb:3
>>
>>What is the problem?
>>(NB: I an working on Windows2000.)
>>    
>>
>
>I guess that's the problem.  AFAIK there are some troubles with Windows
>pipes...
>
>    robert
>
>
>
>  
>
I get the same error for:
    c:> dir | count
but it appears to work as you'd expect for:
    c:> dir | ruby count.rb

Does that help?

Trey