Hello,

is there way to start programs foo and bar such that foo's stdout
goes to bar stdin and bar's stdout goes to stdin?

Or to make program's stdin/out TCPIP socket?

Ales

AlesD wrote:
> is there way to start programs foo and bar such that foo's stdout
> goes to bar stdin and bar's stdout goes to stdin?

I think with a little bit playing with mkfifo you can achieve this.

Matěj

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In article <ecd0pv$f0s$1@mrazik2.dkm.cz>, AlesD <ales_d@seznam.cz> wrote:
> is there way to start programs foo and bar such that foo's stdout
>goes to bar stdin and bar's stdout goes to stdin?

In ksh:

foo |&

bar <&p >&p

John
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John DuBois spcecdt@armory.com KC6QKZ/AE http://www.armory.com/~spcecdt/

On Mon, 21 Aug 2006 20:56:04 -0000, John DuBois wrote:
> In article <ecd0pv$f0s$1@mrazik2.dkm.cz>, AlesD <ales_d@seznam.cz> wrote:
>> is there way to start programs foo and bar such that foo's stdout
>>goes to bar stdin and bar's stdout goes to stdin?
>
> In ksh:
>
> foo |&
>
> bar <&p >&p
[...]

And in zsh:

coproc foo
bar <&p >&p

|& in zsh is the same as in csh/tcsh: pipe both stdout and
stderr in foo |& bar.

Portable solution is to use named pipes:

mkfifo other-way-round
foo < other-way-round | bar > other-way-round

Beware of deadlocks

--
Stephane