Re: [9fans] echo -n

["Federico Benavento" <benavento@gmail.com>]

hola,

On 11/20/06, Joel Salomon <chesky@plan9.jp> wrote:
> > > The only real solution is to change the interface so that
> > > end-of-file is not signaled by a zero-length read.  But that
> > > convention is far too entrenched to go anywhere any time soon.
> >
> > Isn´t it that a write of zero bytes should just not write, instead
> > of meaning a write of zero bytes?
> >
> > Or did I miss something?
>
> That seems to be the definition under the Unix.  From the Single UNIX
> Specification, version 2 man page for write():
>         If nbyte is 0, write() will return 0 and have no other results
>         if the file is a regular file; otherwise, the results are
>         unspecified.
> SUS3 is more verbose, but seems to have the same intent.  Does Plan 9 use zero-length writes for something that shouldn't be changed?
>
> --Joel
>
>

I don't think this is the norm, but I've seen this.
you need a zero-length write to tell wikifs that you
finished writing to /mnt/wiki/new, I figured this out the
hard way, I couldn't understand why my script wasn't
working, after a "echo -n" at the end everything worked
just fine.

-- 
Federico G. Benavento