smbcontrol - send messages to smbd, nmbd or winbindd processes
smbcontrol [-?|--help] [--usage] [-t|--timeout]
[-d|--debuglevel=DEBUGLEVEL] [--debug-stdout] [--configfile=CONFIGFILE]
[--option=name=value] [-l|--log-basename=LOGFILEBASE] [--leak-report]
smbcontrol [destination] [message-type] [parameter]
This tool is part of the samba(7) suite.
smbcontrol is a very small program, which sends messages to a
smbd(8), a nmbd(8), or a winbindd(8) daemon running on
Set timeout to seconds.
One of nmbd
The all destination causes the message to
"broadcast" to all running daemons including nmbd and winbind.
This is a change for Samba 3.3, prior to this the parameter smbd used to do
The smbd destination causes the message to be sent to the
smbd daemon specified in the smbd.pid file.
The nmbd destination causes the message to be sent to the
nmbd daemon specified in the nmbd.pid file.
The winbindd destination causes the message to be sent to
the winbind daemon specified in the winbindd.pid file.
If a single process ID is given, the message is sent to only that
Type of message to send. See the section
MESSAGE-TYPES for details.
any parameters required for the message-type
Print a summary of command line options.
Display brief usage message.
is an integer from 0 to 10. The default
value if this parameter is not specified is 1 for client applications.
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.
This will redirect debug output to STDOUT. By default all
clients are logging to STDERR.
The file specified contains the configuration details
required by the client. The information in this file can be general for client
and server or only provide client specific like options such as client smb
encrypt. See smb.conf for more information. The default configuration file
name is determined at compile time.
Set the smb.conf(5)
"<name>" to value "<value>" from the command
line. This overrides compiled-in defaults and options read from the
configuration file. If a name or a value includes a space, wrap whole
--option=name=value into quotes.
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.
Enable talloc leak reporting on exit.
Enable full talloc leak reporting on exit.
Prints the program version number.
Available message types are:
Order smbd to close the client connections to the named
share. Note that this doesn't affect client connections to any other shares.
This message-type takes an argument of the share name for which client
connections will be closed, or the "*" character which will close
all currently open shares. This may be useful if you made changes to the
access controls on the share. This message can only be sent to
Behave like close-share, but don't disconnect
users that are still allowed to access the share. It can safely be sent to all
smbds after changing share access controls. It will only affect users who have
been denied access since having connected initially. This message can only be
sent to smbd.
Set debug level to the value specified by the parameter.
This can be sent to any of the destinations. If this message is sent to either
the smbd or winbindd daemons, the parent process will rebroadcast the message
to all child processes changing the debug level in each one.
Order smbd to close the client connections from a given
IP address. This message-type takes an argument of the IP address from which
client connections will be closed. This message can only be sent to
This message causes the nmbd daemon to force a new browse
Send specified number of "ping" messages and
wait for the same number of reply "pong" messages. This can be sent
to any of the destinations.
Change profile settings of a daemon, based on the
parameter. The parameter can be "on" to turn on profile stats
collection, "off" to turn off profile stats collection,
"count" to enable only collection of count stats (time stats are
disabled), and "flush" to zero the current profile stats. This can
be sent to any smbd or nmbd destinations.
Request debuglevel of a certain daemon and write it to
stdout. This can be sent to any of the destinations.
Request profilelevel of a certain daemon and write it to
stdout. This can be sent to any smbd or nmbd destinations.
Order smbd to send a printer notify message to any
Windows NT clients connected to a printer. This message-type takes the
Send a queue pause change notify message to the printer
Send a queue resume change notify message for the printer
jobpause printername unixjobid
Send a job pause change notify message for the printer
and unix jobid specified.
jobresume printername unixjobid
Send a job resume change notify message for the printer
and unix jobid specified.
jobdelete printername unixjobid
Send a job delete change notify message for the printer
and unix jobid specified.
Note that this message only sends notification that an event has
occurred. It doesn't actually cause the event to happen.
This message can only be sent to smbd.
Set a mark for dmalloc. Can be sent to both smbd and
nmbd. Only available if samba is built with dmalloc support.
Dump the pointers that have changed since the mark set by
dmalloc-mark. Can be sent to both smbd and nmbd. Only available if samba is
built with dmalloc support.
Shut down specified daemon. Can be sent to both smbd and
Print a human-readable description of all talloc(pool)
memory usage by the specified daemon/process. Available for both smbd and
Fetch and print the ringbuf log. Requires logging =
ringbuf. Available for smbd, winbindd and nmbd.
Force clients of printers using specified driver to
update their local version of the driver. Can only be sent to smbd.
Force daemon to reload smb.conf configuration file. Can
be sent to smbd, nmbd, or winbindd.
Force smbd to reload printers. Can only be sent to
Notify about changes of id mapping. Can be sent to
or (not implemented yet) winbindd
Flush caches for sid <-> gid and/or sid <->
Remove a mapping from cache. The mapping is given by
<ID> which may either be a sid: S-x-..., a gid: "GID number"
or a uid: "UID number".
Remove a mapping from cache. Terminate smbd if the
id is currently in use.
Query the number of smbd child processes. This message
can only be sent to smbd.
This man page is part of version 4.15.2 of the Samba suite.
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.