@ECHO OFF
REM - This version of AUTOPARM.BAT avoids a conflict
REM   with SHARE that afflicted the original.
IF (%1)==() GOTO Action
IF NOT EXIST %0 GOTO TryBat
TYPE %0 | FIND "SET %1=" /V /I > %0
IF NOT (%2)==() ECHO SET %1=%2>> %0
GOTO Action
:TryBat
IF EXIST %0.BAT GOTO AddBat
ECHO Either execute %0 from the current directory
ECHO or spell out its full pathname.
GOTO Action
:AddBat
TYPE %0.BAT | FIND "SET %1=" /V /I > %0.BAT
IF NOT (%2)==() ECHO SET %1=%2>> %0.BAT
:Action