Path: utzoo!censor!geac!torsqnt!lethe!yunexus!ists!helios.physics.utoronto.ca!news-server.csri.toronto.edu!rutgers!apple!Greg@AppleLink.Apple.Com
From: Greg@AppleLink.Apple.Com (Greg Marriott)
Newsgroups: comp.sys.mac.misc
Subject: Re: System 7.0 vs. NeXT Step
Message-ID: <11849@goofy.Apple.COM>
Date: 25 Jan 91 11:30:05 GMT
Sender: usenet@Apple.COM
Organization: Apple Computer, Inc.
Lines: 16
References:<11468@helios.TAMU.EDU> <1991Jan23.204448.23778@unx2.ucc.okstate.edu> <NK5W6CQ@cs.swarthmore.edu> <5646@idunno.Princeton.EDU> <2898@casbah.acns.nwu.edu>

In article <2898@casbah.acns.nwu.edu>, jln@casbah.acns.nwu.edu (John Norstad) writes:
> Apple's MPW (Macintosh Programmer's Workshop) supports pipes and filters.  
> It's almost identical to UNIX.  Filters corresonding to grep, sort, etc. 
> are included.
What John says is true, especially the part about "almost" like UNIX. In MPW
the output of one program is captured into a file, and then the next program
gets a crack at it after the first one is done.  This isn't quite like UNIX
where several processes can be started and the output of one program 
"trickles" into the input of the next, and both run "at the same time".
With MPW there has to be enough disk space to hold the output of the first
program, which can be kind of a problem when processing REALLY REALLY BIG
datasets.

Greg Marriott
Blue Meanie
Apple Computer, Inc.