multiple redirections and flushing

multiple redirections and flushing

[Vincent Lefevre]

How can I tell zsh to automatically flush the buffers when using
multiple redirections?

For instance, if I don't use any redirection, I get one line after the
other in STDOUT, but if I redirect STDOUT like this
prg >results >&2
I only get the results when the program terminates.

-- 
Vincent Lefevre, vlefevre@ens-lyon.fr | Acorn Risc PC, StrongARM @ 202MHz
http://www.ens-lyon.fr/~vlefevre      | 20+1MB RAM, Eagle M2, TV + Teletext
PhD in Computer Science, 1st year     | Apple CD-300, SyQuest 270MB (SCSI)
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Re: multiple redirections and flushing

[Zefram]

Vincent Lefevre wrote:
>For instance, if I don't use any redirection, I get one line after the
>other in STDOUT, but if I redirect STDOUT like this
>prg >results >&2
>I only get the results when the program terminates.

That's up to the program, `prg' in this case.  All zsh does is open
the file.  You might find the `script' command to be of some use, if
you can't modify the program.

-zefram

Re: multiple redirections and flushing

[Vincent Lefevre]

On Tue, Jun 10, 1997 at 03:06:33PM +0100, Zefram wrote:
> That's up to the program, `prg' in this case.  All zsh does is open

Thanks, this works (as the program is a perl script, I could add
a "$| = 1;"). I was just a bit surprised because when there is no
redirection, the results are written to the screen one line after
the other, even with no "$| = 1;".

> the file.  You might find the `script' command to be of some use, if
> you can't modify the program.

-- 
Vincent Lefevre, vlefevre@ens-lyon.fr | Acorn Risc PC, StrongARM @ 202MHz
http://www.ens-lyon.fr/~vlefevre      | 20+1MB RAM, Eagle M2, TV + Teletext
PhD in Computer Science, 1st year     | Apple CD-300, SyQuest 270MB (SCSI)
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