C:\WINDOWS>REG COMPARE /?

Console Registry Tool for Windows - version 3.0
Copyright (C) Microsoft Corp. 1981-2001.  All rights reserved


REG COMPARE KeyName1 KeyName2 [/v ValueName | /ve] [Output] [/s]

 KeyName    [\\Machine\]FullKey
   Machine  Name of remote machine - omitting defaults to the current machine
            Only HKLM and HKU are available on remote machines
   FullKey  ROOTKEY\SubKey
            If FullKey2 is not specified, FullKey2 is the same as FullKey1
   ROOTKEY  [ HKLM | HKCU | HKCR | HKU | HKCC ]
   SubKey   The full name of a registry key under the selected ROOTKEY
 ValueName  The value name, under the selected Key, to compare
            When omitted, all values under the Key are compared
 /ve        compare the value of empty value name <no name>
 /s         Compare all subkeys and values
 Output     [/oa | /od | /os | /on]
            When omitted, output only differences
   /oa      Output all of differences and matches
   /od      Output only differences
   /os      Output only matches
   /on      No output

Return Code:

 0 - Succussful, the result compared is identical
 1 - Failed
 2 - Successful, the result compared is different

Examples:

 REG COMPARE HKLM\Software\MyCo\MyApp HKLM\Software\MyCo\SaveMyApp
   Compares all values under the key MyApp with SaveMyApp

 REG COMPARE HKLM\Software\MyCo HKLM\Software\MyCo1 /v Version
   Compares the value Version under the key MyCo and MyCo1

 REG COMPARE \\ZODIAC\HKLM\Software\MyCo \\. /s
   Compares all subkeys and values under HKLM\Software\MyCo on ZODIAC
   with the same key on the current machine



C:\WINDOWS>REG EXPORT /?

Console Registry Tool for Windows - version 3.0
Copyright (C) Microsoft Corp. 1981-2001.  All rights reserved


REG EXPORT KeyName FileName

 Keyname    ROOTKEY\SubKey (local machine only)
   ROOTKEY  [ HKLM | HKCU | HKCR | HKU | HKCC ]
   SubKey   The full name of a registry key under the selected ROOTKEY
 FileName   The name of the disk file to export

Examples:

 REG EXPORT HKLM\Software\MyCo\MyApp AppBkUp.reg
   Exports all subkeys and values of the key MyApp to the file AppBkUp.reg



C:\WINDOWS>REG IMPORT /?

Console Registry Tool for Windows - version 3.0
Copyright (C) Microsoft Corp. 1981-2001.  All rights reserved


REG IMPORT FileName

 FileName  The name of the disk file to import (local machine only)

Examples:

 REG IMPORT AppBkUp.reg
   Imports registry entrys from the file AppBkUp.reg