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From: brad@huey.Jpl.Nasa.GOV (Brad Hines)
Newsgroups: comp.sys.ibm.pc.hardware,comp.os.msdos.programmer
Subject: Re: Dos mapped drives
Keywords: SUBST & ASSIGN
Message-ID: <11342@jpl-devvax.JPL.NASA.GOV>
Date: 7 Feb 91 14:35:27 GMT
References: <1991Feb6.141318.4647@cbnewsl.att.com>
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In article <1991Feb6.141318.4647@cbnewsl.att.com>, feg@moss.ATT.COM (Forrest Gehrke,2C-119,7239,ATTBL) writes:
Is there a way to distinguish Dos-mapped SUBSTituted and 
ASSIGNed drives from real, i.e. actual, drives?


DOS 4.x (not in earlier versions, I don't think) has the undocumented
"TRUENAME" command-line command and associated INT 21 function.  I've
never tried it myself, but it allegedly sees through subst's and
assigns and returns the "true" pathname to a file.  This was written
up in the back of a recent PC Mag (last 2 or 3 issues) or Byte (last 2
issues).  I think it was in PC Mag in the Tutor section.

-- 
Brad Hines
Internet: brad@huey.jpl.nasa.gov
Jet Propulsion Lab, Pasadena, California