[Wellington-pm] pass-through pipe?

[Lenz Gschwendtner]

you mean something other than one process prints to STDOUT and the other one reading from STDIN ... 

not sure i get your question right but if you need something other than the normal stuff then you might be after a FIFO buffer? shared memory? what is the use case? probably that helps :-)

cheers
lenz

On 18/07/2010, at 4:30 PM, Richard Hector wrote:

> Hi all,
> 
> My question may well be unclear, because I may not understand the
> problem.
> 
> I want to pipe the output of one command to the input of another - stuff
> that's commonly done in the shell.
> 
> I could for example, use
> system 'ls | sort';
> 
> but that, as I understand it, involves starting a shell.
> 
> It seems that it is cleaner, more efficient, and perhaps more secure,
> though, to do such things as piped opens entirely within perl.
> 
> Is it possible to create an (unnamed) pipe to which I can connect both
> processes, leaving perl out of the loop until the end? It would probably
> be useful to be able to collect standard error and exit status from
> each.
> 
> Thanks,
> Richard
> 
> 
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