IO::pipe man page on BSDOS

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IO::Pipe(3)	 Perl Programmers Reference Guide     IO::Pipe(3)

NAME
       IO::pipe - supply object methods for pipes

SYNOPSIS
	       use IO::Pipe;

	       $pipe = new IO::Pipe;

	       if($pid = fork()) { # Parent
		   $pipe->reader();

		   while(<$pipe> {
		       ....
		   }

	       }
	       elsif(defined $pid) { # Child
		   $pipe->writer();

		   print $pipe ....
	       }

	       or

	       $pipe = new IO::Pipe;

	       $pipe->reader(qw(ls -l));

	       while(<$pipe>) {
		   ....
	       }

DESCRIPTION
       IO::Pipe provides an interface to creating pipes between
       processes.

CONSTRUCTOR
       new ( [READER, WRITER] )
	   Creates a IO::Pipe, which is a reference to a newly
	   created symbol (see the Symbol package). IO::Pipe::new
	   optionally takes two arguments, which should be
	   objects blessed into IO::Handle, or a subclass
	   thereof. These two objects will be used for the system
	   call to pipe. If no arguments are given then method
	   handles is called on the new IO::Pipe object.

	   These two handles are held in the array part of the
	   GLOB until either reader or writer is called.

METHODS
       reader ([ARGS])
	   The object is re-blessed into a sub-class of
	   IO::Handle, and becomes a handle at the reading end of

16/Sep/1999	       perl 5.005, patch 03			1

IO::Pipe(3)	 Perl Programmers Reference Guide     IO::Pipe(3)

	   the pipe. If ARGS are given then fork is called and
	   ARGS are passed to exec.

       writer ([ARGS])
	   The object is re-blessed into a sub-class of
	   IO::Handle, and becomes a handle at the writing end of
	   the pipe. If ARGS are given then fork is called and
	   ARGS are passed to exec.

       handles ()
	   This method is called during construction by
	   IO::Pipe::new on the newly created IO::Pipe object. It
	   returns an array of two objects blessed into
	   IO::Pipe::End, or a subclass thereof.

SEE ALSO
       the IO::Handle manpage

AUTHOR
       Graham Barr <bodg@tiuk.ti.com>

COPYRIGHT
       Copyright (c) 1996 Graham Barr. All rights reserved. This
       program is free software; you can redistribute it and/or
       modify it under the same terms as Perl itself.

16/Sep/1999	       perl 5.005, patch 03			2

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