Source code for hotfixes.bat

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@ECHO OFF
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ECHO.
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:: Check command line parameter
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IF NOT "%1"=="" IF /I NOT "%1"=="/V" GOTO Syntax

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:: Check for correct Windows version
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IF NOT "%OS%"=="Windows_NT" GOTO Syntax
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:: Keep variables local
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SETLOCAL
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:: /V parameter set verbose display
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IF /I "%1"=="/V" SET Verbose=1
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:: Gather info from the registry
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REGEDIT /E "%Temp%.\Hotfixes.dat" "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Hotfix"

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:: Display header
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ECHO Hotfixes installed on this PC:
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ECHO.
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:: Summarize all hotfixes gathered from registry

FOR /F "tokens=7 delims=\" %%a IN ('TYPE "%Temp%.\Hotfixes.dat" ^| FIND "[HKEY_"') DO FOR /F "tokens=1 delims=]" %%A IN ('ECHO.%%a ^| FIND "]"') DO CALL :Summarize "%%A"

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:: Remove temporary file
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IF EXIST "%Temp%.\Hotfixes.dat" DEL "%Temp%.\Hotfixes.dat"

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:: Done
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ENDLOCAL
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GOTO:EOF
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:Summarize
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SETLOCAL
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SET Hotfix=%~1
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:: No more details required
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IF NOT "%Verbose%"=="1" (
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	ECHO.%Hotfix%
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	GOTO:EOF
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)
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:: Gather more details from the registry

REGEDIT /E "%Temp%.\Hotfixes.dat" "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Hotfix\%~1"

:: Retrieve the hotfix description from the temporary file we just created

FOR /F "tokens=1* delims==" %%a IN ('TYPE "%Temp%.\Hotfixes.dat" ^| FIND /I "Fix Description"') DO SET Description=%%~b

:: Escape brackets in the description, otherwise the ECHO command will fail

IF DEFINED Description SET Description=%Description:(=^^^(%

IF DEFINED Description SET Description=%Description:)=^^^)%

:: The whitespace in the following line is a tab

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ECHO.%Hotfix%	%Description%
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ENDLOCAL
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GOTO:EOF
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:Syntax
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ECHO Hotfixes.bat,  Version 2.00 for Windows NT 4 / 2000

ECHO Displays a list of hotfixes installed locally

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ECHO.
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ECHO Usage:  HOTFIXES  [ /V ]
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ECHO.
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ECHO         /V  list both hotfix numbers and descriptions

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ECHO.
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ECHO Written by Rob van der Woude
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ECHO http://www.robvanderwoude.com
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GOTO:EOF
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