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What does SUBST stand for? 

What does SUBST mean? This page is about the various possible meanings of the acronym, abbreviation, shorthand or slang term: SUBST.

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Subst

Substitute

Academic & Science

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SUBST

Substitute Drive Designator

Computing » DOS Commands

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What does SUBST mean?

SUBST
SUBST is a command on the DOS, IBM OS/2 and Microsoft Windows operating systems used for substituting paths on physical and logical drives as virtual drives. It is similar to floating drives, a more general concept in operating systems of Digital Research origin, including CP/M-86 4.x, Personal CP/M-86 2.x, Concurrent DOS, Multiuser DOS, System Manager 7, REAL/32, as well as DOS Plus and DR DOS. The Windows SUBST command is available in supported versions of the command line interpreter CMD.EXE. In Windows NT, SUBST uses DefineDosDevice to create the disk mappings. The JOIN command is the "opposite" of SUBST, because JOIN will take a drive letter and make it appear as a directory. Some versions of MS-DOS COMMAND.COM support the undocumented internal TRUENAME command which can display the "true name" of a file, by bypassing SUBST, JOIN and ASSIGN filesystem mappings.

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