[Gllug] Treats for Windows refugees

Daniel P. Berrange dan at berrange.com
Mon Sep 5 13:21:21 UTC 2005


On Mon, Sep 05, 2005 at 08:58:16PM +0100, Russell Howe wrote:
> On Mon, Sep 05, 2005 at 02:00:48PM +0100, Daniel P. Berrange wrote:
> > Ah, but can the input of the pipe be an arbitrary TCP connection
> > 
> >    $ cat </dev/tcp/time.nist.gov/13
> >    53618 05-09-05 19:46:47 50 0 0 945.1 UTC(NIST) * 
> 
> For anyone wondering why this doesn't work in bash on Debian, they
> compiled bash without networking support citing security concerns.

Well, it seems more like philosophical reasons

  "10. Why is bash configured with --disable-net-redirections?

    It can produce completely unexpected results. This kind of
    feature should not be part of a shell but a special. tool. And
    that tool has existed for years already, it's called netcat."

To be honest, they're probably right, since, in fact the nc command
is more compact than the bash builtin :-)

  $cat <(nc time.nist.gov 13)
  53618 05-09-05 20:11:49 50 0 0 757.0 UTC(NIST) * 


Dan.
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