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Langue: en

Version: 2010-04-03 (fedora - 01/12/10)

Section: 1 (Commandes utilisateur)


hivexregedit - Merge and export Registry changes from regedit-format files.


  hivexregedit --merge [--prefix prefix] [--encoding enc] \
          hivefile [regfile]
  hivexregedit --export [--prefix prefix] hivefile key > regfile


Please note hivexregedit is a low-level tool for manipulating hive files directly. To merge or export registry changes to Windows virtual machines it's better to use virt-win-reg(1).

Given a local binary (``hive'') file, there are two modes. "--merge" imports (merges) changes from a regedit-format file into the hive. It is similar to using the "/s" switch in Windows regedit.exe.

"--export" exports a Registry key (recursively) into the regedit format.


"hivexregedit" expects that regedit files have already been re-encoded in the local encoding. Usually on Linux hosts, this means UTF-8 with Unix-style line endings. Since Windows regedit files are often in UTF-16LE with Windows-style line endings, you may need to re-encode the whole file before or after processing.

To re-encode a file from Windows format to Linux (before processing it with the "--merge" option), you would do something like this:

  iconv -f utf-16le -t utf-8 < win.reg | dos2unix > linux.reg

To go in the opposite direction, after using "--export" and before sending the file to a Windows user, do something like this:

  unix2dos linux.reg | iconv -f utf-8 -t utf-16le > win.reg

For more information about encoding, see Win::Hivex::Regedit(3).

If you are unsure about the current encoding, use the file(1) command. Recent versions of Windows regedit.exe produce a UTF-16LE file with Windows-style (CRLF) line endings, like this:

  $ file software.reg
  software.reg: Little-endian UTF-16 Unicode text, with very long lines,
  with CRLF line terminators

This file would need conversion before you could "--merge" it.


Be careful when passing parameters containing "\" (backslash) in the shell. Usually you will have to use 'single quotes' or double backslashes (but not both) to protect them from the shell.

CurrentControlSet etc.

Registry keys like "CurrentControlSet" don't really exist in the Windows Registry at the level of the hive file, and therefore you cannot modify these. Replace this with "ControlSet001", and similarly for other "Current..." keys.


  $ virt-cat WindowsGuest /Windows/System32/config/software > software.hive
  $ hivexregedit --export \
      software.hive '\Microsoft' > ms-keys.reg
  $ hivexregedit --merge system.hive \
      --prefix 'HKEY_LOCAL_MACHINE\SYSTEM' additions.reg


Display help.
Enable debugging in the hivex library. This is useful for diagnosing bugs and also malformed hive files.
  hivexregedit --merge [--prefix prefix] [--encoding enc] \
          hivefile [regfile]

Merge "regfile" (a regedit-format text file) into the hive "hivefile". If "regfile" is omitted, then the program reads from standard input. (Also you can give multiple input files).

"--prefix" specifies the Windows Registry prefix. It is almost always necessary to use this when dealing with real hive files.

"--encoding" specifies the encoding for unmarked strings in the input. It defaults to "UTF-16LE" which should work for recent versions of Windows. Another possibility is to use "ASCII".

  hivexregedit --export [--prefix prefix] hivefile key > regfile

"key" is a path within the hive "hivefile". (The key should not contain any prefix and should be quoted to defend backslashes from the shell). The key is exported, recursively, to standard output in the textual regedit format.

"--prefix" specifies the Windows Registry prefix. It is almost always necessary to use this when dealing with real hive files.

--prefix prefix
Hive files and Windows Registry key names are indirectly related. For example, inside the software hive, all keys are stored relative to "HKEY_LOCAL_MACHINE\SOFTWARE". Thus "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft" appears in the hive file as "\Microsoft".

The hive format itself does not store this prefix, so you have to supply it based on outside knowledge. (virt-win-reg(1), amongst other things, already knows about this).

Usually it is sufficient to pass the parameter "--prefix 'HKEY_LOCAL_MACHINE\SOFTWARE'" or similar when doing merges and exports.

--encoding UTF-16LE|ASCII
When merging (only), you may need to specify the encoding for strings to be used in the hive file. This is explained in detail in ``ENCODING STRINGS'' in Win::Hivex::Regedit(3).

The default is to use UTF-16LE, which should work with recent versions of Windows.


virt-win-reg(1), Win::Hivex::Regedit(3), Win::Hivex(3), hivexsh(1), dos2unix(1), unix2dos(1), iconv(1), <>.


Richard W.M. Jones <> Copyright (C) 2010 Red Hat Inc.

This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

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