Pierre Gaston writes:
> On Tue, Aug 26, 2008 at 5:41 AM, R. Bernstein <[EMAIL PROTECTED]> wrote:
> > Both zsh and ksh have a way to open a file or duplicate a file
> > descriptor and let the interpreter pick the descriptor saving the
> > newly-allocated file descriptor number in a variable. In particular:
> >
> > exec {fd}<&0
> >
> > will duplicate stdin and save the newly allocated file-descriptor
> > number to fd. Also:
> >
> > exec {fd}<filename
> >
> > opens filename with a new file descriptor and saves the number
> > allocated in fd. Short of going outside of the language and using
> > lsof, /proc, or the processes table, I haven't been able to figure out
> > how to do the corresponding thing in bash. Is there a way?
> >
> > If not, it would be great if a future version had this extension that
> > zsh and ksh both seem to have.
> >
> > Thanks!
>
> This is a standard behaviour and you can do this in pretty much any
> shell out there, including bash.
Really? It doesn't seem to be documented in bashref. And when I tried just
a moment ago:
$ {fd}<&0
{fd}<&0
bash: {fd}: command not found
$ bash --version
bash --version
GNU bash, version 3.2.39(1)-release (i486-pc-linux-gnu)
Perhaps you are thinking of the variation without braces?
