Another way to determine when Windows was installed.

I first scripted WhenInstalled.bat in tip 8180.

I have now scripted InstallDate.bat to determine when Windows was installed.

The syntax for using InstallDate.bat is:

\[call\] InstallDate Dt Tm

Where:

Dt is a call directed environment variable that will contain the shortdate
   when Windows was installed, like 05/03/2003.

Tm is a call directed environment variable that will contain the time
   when Windows was installed, like 11:05:59.

InstallDate.bat contains:

@echo off
if \{%2\}==\{\} @echo Syntax: InstallDate Dt Tm&goto :EOF
if exist "%TEMP%\InstallDate.vbs" goto doit
@echo.Dim WshShell, wInstall >"%TEMP%\InstallDate.vbs"
@echo.Set WshShell = WScript.CreateObject("WScript.Shell") >>"%TEMP%\InstallDate.vbs"
@echo.wInstall = WshShell.RegRead("HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\installdate") >>"%TEMP%\InstallDate.vbs"
@echo.WScript.Echo DateAdd("s", wInstall, DateSerial(1970, 1, 1)) >>"%TEMP%\InstallDate.vbs"
:doit
for /f "Tokens=1,2" %%a in ('cscript //nologo "%TEMP%\InstallDate.vbs"') do (
 set %1=%%a
 set %2=%%b
)

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