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HasNUL.bat (GPL)

After finding out that Windows Fundamentals for Legacy PCs (WinFLP) does not have the NUL device, I decided to write this batch file to determine whether NUL device exists on any given Windows installation. You can use this script in your own custom script to make your script smarter and void the missing NUL problem (see TrackBack below).

HasNUL.bat returns "true" if the NUL device exists, while it returns "false" if the NUL device doesn't exist. The following is an example of using HasNUL.bat in your batch file.

  call SetVariableToOutput.bat HasNUL.bat
if "%OutputVariable%" == "true" goto :nullExists

HasNUL.bat is distributed as executable source code under the GNU General Public License. Please see the license agreement elsewhere on this site.

Attached File: HasNUL.bat (306 B)

Chieh Cheng
Wed, 16 Jul 2008 23:16:35 +0000

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Title: NUL Missing on WinFLP
Weblog: Cynosure.X International
Excerpt: Recently, I have been playing with Windows Fundamentals for Legacy PCs (WinFLP). And I have found that even though WinFLP thinks NUL exists, it actually doesn't exist(unlike Windows XP). So it's been breaking my batch scripts. The following is the error message from using the NUL device on WinFLP.
Tracked: Wed, 16 Jul 2008 23:18:19 +0000

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