dbwrap_tool Man page

DBWRAP_TOOL(1) System Administration tools DBWRAP_TOOL(1)


dbwrap_tool – low level TDB/CTDB manipulation tool using the dbwrap


dbwrap_tool [–persistent] [–non-persistent] [-d ] [-s ] [-l ] [-V] [–option==] {} {} [ [ []]]


This tool is part of the samba(7) suite.

The dbwrap_tool program is used to read and manipulate TDB/CTDB
databases using the dbwrap interface.

The following database operations are available:

· fetch: fetch a record

· store: create or modify a record

· delete: remove a record

· exists: test for existence of a record

· erase: remove all records

· listkeys: list all available records

· listwatchers: list processes, which are waiting for changes in a

The following types are available:

· int32: signed 32bit integer

· uint32: unsigned 32bit integer

· string: “hello world”

· hex: hex strings like “68656C6C6F20776F726C6400” (“hello world”)


Open the database as a persistent database.

Exactly one of –persistent and –non-persistent must be specified.

Open the database as a non-persistent database.

Caveat: opening a database as non-persistent when there is
currently no other opener will wipe the database.

Exactly one of –persistent and –non-persistent must be specified.

level is an integer from 0 to 10. The default value if this
parameter is not specified is 1.

The higher this value, the more detail will be logged to the log
files about the activities of the server. At level 0, only critical
errors and serious warnings will be logged. Level 1 is a reasonable
level for day-to-day running – it generates a small amount of
information about operations carried out.

Levels above 1 will generate considerable amounts of log data, and
should only be used when investigating a problem. Levels above 3
are designed for use only by developers and generate HUGE amounts
of log data, most of which is extremely cryptic.

Note that specifying this parameter here will override the log
level parameter in the smb.conf file.

Prints the program version number.

The file specified contains the configuration details required by
the server. The information in this file includes server-specific
information such as what printcap file to use, as well as
descriptions of all the services that the server is to provide. See
smb.conf for more information. The default configuration file name
is determined at compile time.

Base directory name for log/debug files. The extension “.progname”
will be appended (e.g. log.smbclient, log.smbd, etc…). The log
file is never removed by the client.

Set the smb.conf(5) option “” to value “” from the
command line. This overrides compiled-in defaults and options read
from the configuration file.

Print a summary of command line options.

Display brief usage message.

dbwrap_tool fetch

dbwrap_tool store

dbwrap_tool delete

dbwrap_tool exists

dbwrap_tool erase

dbwrap_tool listkeys

dbwrap_tool listwatchers

List all keys from winbindd_idmap.tdb
dbwrap_tool –persistent winbindd_idmap.tdb listkeys

Fetch record with key “USER HWM” as uint32
dbwrap_tool –persistent winbindd_idmap.tdb fetch “USER HWM” uint32

Remove record with key “USER HWM”
dbwrap_tool –persistent winbindd_idmap.tdb remove “USER HWM”

Store and overwrite record “USER HWM” with value 214
uint32: dbwrap_tool –persistent winbindd_idmap.tdb store “USER
HWM” uint32 214 hex: dbwrap_tool –persistent winbindd_idmap.tdb
store “USER HWM” hex D6000000

Use with caution!

This man page is correct for version 3 of the Samba suite.


smbd(8), samba(7)


The original Samba software and related utilities were created by
Andrew Tridgell. Samba is now developed by the Samba Team as an Open
Source project similar to the way the Linux kernel is developed.

The dbwrap_tool manpage was written by Bjoern Baumbach.

Samba 4.3 09/23/2016 DBWRAP_TOOL(1)

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