C:\WINDOWS>REG UNLOAD /?

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


REG UNLOAD KeyName

 KeyName    ROOTKEY\SubKey (local machine only)
   ROOTKEY  [ HKLM | HKU ]
   SubKey   The key name of the hive to unload

Examples:

 REG UNLOAD HKLM\TempHive
   Unloads the hive TempHive in HKLM



C:\WINDOWS>REG RESTORE /?

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


REG RESTORE KeyName FileName

 KeyName    ROOTKEY\SubKey (local machine only)
   ROOTKEY  [ HKLM | HKCU | HKCR | HKU | HKCC ]
   SubKey   The full name of a registry key to restore the hive file into.
            Overwriting the existing key's values and subkeys
 FileName   The name of the hive file to restore
            You must use REG SAVE to create this file

Examples:

 REG RESTORE HKLM\Software\Microsoft\ResKit NTRKBkUp.hiv
   Restores the file NTRKBkUp.hiv overwriting the key ResKit



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