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Date: | Sat, 23 Jan 2010 15:23:51 +0100 |
From: | Corinna Vinschen <corinna-cygwin AT cygwin DOT com> |
To: | cygwin AT cygwin DOT com |
Subject: | Re: Bash process substitution |
Message-ID: | <20100123142351.GX2402@calimero.vinschen.de> |
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On Jan 23 12:07, Corinna Vinschen wrote: > On Jan 22 18:46, Dave wrote: > > Is process substitution expected to work in 1.7.1? > > > > Here's what I tried: > > > > kilroyd AT MINIME ~ > > $ uname -a > > CYGWIN_NT-5.1 MINIME 1.7.1(0.218/5/3) 2009-12-07 11:48 i686 Cygwin > > > > kilroyd AT MINIME ~ > > $ echo LOG:bananas | tee file.txt > > LOG:bananas > > > > kilroyd AT MINIME ~ > > $ cat file.txt > > LOG:bananas > > > > kilroyd AT MINIME ~ > > $ echo LOG:bananas | tee >(grep "^LOG:" > file.txt) > > LOG:bananas > > tee: /dev/fd/63: Bad file descriptor > > I'm not quite sure how this command works under the hood, but it's > possible that this can't work in Cygwin due to a restriction in > Windows. In contrast to Unix, you can't call open(pipe_fd, O_RDONLY) > if pipe_fd is the write side of a pipe and vice versa. If bash's > process substitution relies on that, it's simply not possible. > Dunno if there is a way to implement this using some hackery, of course... Hang on, this is a EBADF. Looks like bash tries to access a file descriptor which isn't available (anymore). Eric, would you mind to have a look into bash to examine what's going on here? Corinna -- Corinna Vinschen Please, send mails regarding Cygwin to Cygwin Project Co-Leader cygwin AT cygwin DOT com Red Hat -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple
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