Article View: comp.os.msdos.programmer
Article #6460Re: Normal MSDOS multitasking!
From: fred smith
Date: Tue, 15 Dec 1992 13:48
Date: Tue, 15 Dec 1992 13:48
27 lines
1499 bytes
1499 bytes
Chris (cbusch@ub.d.umn.edu) wrote: : Apparantly MSDOS multitasks with the use of the pipe "|". Is this : true? NO NO NO NO NO NO !!!!!!!!!!!!!!!!!!!!1 : How does the | really work? For example: "type this.txt | more" : has 'type' and 'more' being ran simultaneously (apparantly). How is : this so? MS-DOS is too stupid to multitask. It lacks the facilities. Pipes are implemented as sequential processes with a temporary file in the middle. on Unix, the same thing is literally done by running two programs "at the same time" with the output of the first going to the input of the second. BUT NOT ON DOS which is fundamentally incapable of doing that. : : -- : Chris Busch CBUSCH@ub.d.umn.edu : "C++ is the language of choice." : "The use of COBOL cripples the mind; its teaching should, therefore, : be reguarded as a criminal offense." - E. W. Dijkista : "High-level languages should remove burden from the programmer, not : put burden on the programmer!" : "Don't ask 'why would you do that?' instead ask 'why wouldn't you do that?'" :
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Path: arc1-ca.pugleaf.net!sparky!uunet!spool.mu.edu!wupost!gumby!yale!hsdndev!spdcc!merk!fcshome!fredex From: fredex@fcshome.UUCP (fred smith) Newsgroups: comp.os.msdos.programmer Subject: Re: Normal MSDOS multitasking! Message-ID: <9212142475@fcshome.UUCP> Date: 15 Dec 92 13:48:13 GMT References: <1ghb1vINNccb@ub.d.umn.edu> Organization: What?!? Absolutely none! Lines: 27 X-Newsreader: TIN [version 1.1 PL7]