Q22015: SHELL "PATH=\…" Affects Only a Local Copy of DOS
Article: Q22015 Product(s): See article Version(s): 2.00 2.01 3.00 4.00 4.00b 4.50 Operating System(s): MS-DOS Keyword(s): ENDUSER | | mspl13_basic Last Modified: 31-JAN-1990 SHELLing to the DOS PATH command fails to change the default directory search path when you exit QuickBASIC. BASICA Version 3.10 behaves similarly. The following is an example: SHELL "PATH=\BASIC" According to Page 458 of the "Microsoft QuickBASIC Compiler" manual for Version 3.00 and Page 396 of the "Microsoft QuickBASIC Version 4.0: BASIC Language Reference" manual, the SHELL statement allows execution of DOS commands such as DIR, PATH, and SORT. When you invoke a SHELL command from a QuickBASIC program, a local copy of COMMAND.COM and the DOS environment is spawned. When paths are changed, only the local environment copy is changed, not the original DOS environment.
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