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\->Batch Files->Environment Variable Indirection - one variable contains full or partial name of another

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The Code for: "Environment Variable Indirection [one variable contains full or partial name of another].cmd"

This is the example, a shortcut was installed to this code :

@echo off
::@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
:: $Header:   C:/DBAREIS/Projects.PVCS/Win32/ScriptingTipsAndTricks/EXAMPLE[cmd].Environment Variable Indirection [one variable contains full or partial name of another].cmd.pvcs   1.0   11 Jul 2014 19:31:02  $
::@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@

::--- You must specify "ENABLEDELAYEDEXPANSION" -----------------------
setlocal ENABLEEXTENSIONS ENABLEDELAYEDEXPANSION

::--- Display the "USERNAME" (standard Windows variable) indirectly ---
set VarName=USERNAME
echo %VarName% = !%VarName%!

Please note that that I am not trying to show how great I am by producing batch files 9,000 characters long on one line that no one will understand or be able to debug when they go wrong. I am going out of my way to comment the code and make it verbose so beginners and advanced users will both benefit. I don't claim to be an expert that knows everything, if I'm wrong or make a mistake then please contact me and let me know :-)


Microsoft awarded me an MVP (Most Valuable Professional award) in 2004, 2005, 2006, 2007, 2008 & 2009 for the Windows SDK (Windows Installer) area.Please email me any feedback, additional information or corrections.
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Sunday September 07 2014 at 12:50pm
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Microsoft awarded me an MVP (Most Valuable Professional award) in 2004, 2005, 2006, 2007, 2008 & 2009 for the Windows SDK (Windows Installer) area.