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WHICH command for DOS

If You need the analog of Unix ‘which’ command and do not have Resource Kit, the following batch file will help.
The code was found on www.ss64.com
Published with the permission of the author, Clay Calvert.

@echo off
SETLOCAL
(set WF=)

:: Look for file in the current directory


for %%a in ("" %!!%) do (
if not defined WF if exist "%~1%%~a" set WF=%CD%\%~1%%~a)

:: Look for file in the PATH


for %%a in ("" %!!%) do (
if not defined WF for %%g in ("%~1%%~a") do (
if exist "%%~$PATH:g" set WF=%%~$PATH:g))

:: Store the Help Error message


if NOT "%~x1"=="" goto:END
for /f "delims=." %%a in ('help.exe *') do set HlpErr=%%a

:: If command missing from Help, goto end


help.exe "%~1" |find "%HlpErr%">nul && goto:END

:: Listed in help so find file in System32


for %%a in (exe com) do (
if /i "%WF%"=="%windir%\system32\%~1.%%a" goto:END)

:: File not in System32, so must be an internal command


set WF="%~1" is an internal command

:END
if defined WF (echo.%WF%) else (
echo The file: "%~1" was not found)

:: Credits:

:: Clay Calvert
:: alt.msdos.batch.nt

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