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Linux/Unix which command equivalent on Windows

"which" command on Linux can help locate executable files, somethings we need same function on windows. Here's how:

if you're using Windows 7, there's a building command "where", so if you want to find where is "notepad.exe" for Microsoft Word, just fire up and command window and type:

where notepad.exe

you'll get something like:
C:\>where.bat notepad.exe
C:\WINDOWS\system32\notepad.exe
C:\WINDOWS\notepad.exe

on Windows XP, there's no build-in command, so create a batch file called where.bat with below content:
@echo off
for %%i in (%1) do if not ""=="%%~$PATH:i" echo %%~$PATH:i

now, run

where notepad.exe

you'll get something like:
C:\>where.bat notepad.exe
C:\WINDOWS\system32\notepad.exe

you can save the file in windows directory, so you can use it anywhere

Attention: only executable list in environment variable PATH can be found just like the way Linux/Unix works.
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