The "Which" command under Windows

Under Linux, there is a command called which, which finds the directory in the path where a command resides and displays it. Linux under:

[adam@i ase adam]$ which LS

/bin/ls

[Adam@i ASE adam]$ which RM

/BIN/RM has a where.exe in the NT Resource Kit, which has the same effect, but resource kit is charged, where we can make a batch file to implement this function.

Use Notepad to edit a which.bat and store it in a directory in the WI t directory or other path variables, and the batch file reads as follows: @echo off Rem check command line arguments

If {%1}=={} goto:usage

For%%i I ({{/{-) do if {%1}==%%i} goto:usage%%i

Echo. : Rem Check to see if the file exists in the current directory

For%%i I (% 1) do if exist%%~nx%i (

Echo%%~fi

Goto:eof

): Rem checks the file in path

For%%i I (% 1) do (

If exist%%~ $PATH: I (

echo%%~ $PATH: I

) Else (

Echo Error:%1 is not in the path!!!

Goto:usage

)

)

Goto:eof

: Usage

Echo.

echo WHICH Quot;filename "

Echo.

echo input file, return the full path of the file!

Echo.

Let's take a test of our program:

Microsoft Window [Versio 5.00.2195]

(C) All rights reserved 1985-1998 Microsoft Corp. C:>which which quot;filename "input file, return the full path of the file!"

C:>which cmd.exe C:wi Tsystem32cmd.exe c:> OK, test pass!