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man pages section 8: System Administration Commands

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Updated: Wednesday, July 27, 2022

samba (8)


samba - Server to provide AD and SMB/CIFS services to clients


samba [-D] [-i] [-M <model>] [--maximum-runtime=<seconds>] [-b]
[--help] [--usage] [-d <debug level>] [--debug-stderr]
[-s <configuration file>] [--option=<smb_conf_param>=<value>]
[-l <log directory>] [--leak-report] [--leak-report-full] [-V]


System Administration tools                                           SAMBA(8)

       samba - Server to provide AD and SMB/CIFS services to clients

       samba [-D] [-i] [-M <model>] [--maximum-runtime=<seconds>] [-b]
        [--help] [--usage] [-d <debug level>] [--debug-stderr]
        [-s <configuration file>] [--option=<smb_conf_param>=<value>]
        [-l <log directory>] [--leak-report] [--leak-report-full] [-V]

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

       samba is the server daemon that provides Active Directory, filesharing
       and printing services to clients. The server provides filespace and
       directory services to clients using the SMB (or CIFS) protocol and
       other related protocols such as DCE/RPC, LDAP and Kerberos.

       Clients supported include MSCLIENT 3.0 for DOS, Windows for Workgroups,
       Windows 95/98/ME, Windows NT, Windows 2000/XP/2003, OS/2, DAVE for
       Macintosh, and cifsfs for Linux.

       An extensive description of the services that the server can provide is
       given in the man page for the configuration file controlling the
       attributes of those services (see smb.conf(5). This man page will not
       describe the services, but will concentrate on the administrative
       aspects of running the server.

       Please note that there are significant security implications to running
       this server, and the smb.conf(5) manual page should be regarded as
       mandatory reading before proceeding with installation.

           If specified, this parameter causes the server to operate as a
           daemon. That is, it detaches itself and runs in the background,
           fielding requests on the appropriate ports. Operating the server as
           a daemon is the recommended way of running samba for servers that
           provide more than casual use file and print services. This switch
           is assumed if samba is executed on the command line of a shell.

           If this parameter is specified it causes the server to run
           "interactively", not as a daemon, even if the server is executed on
           the command line of a shell. Setting this parameter negates the
           implicit daemon mode when run from the command line.  samba also
           logs to standard output, as if the -S parameter had been given.

           This parameter can be used to specify the "process model" samba
           should use. This determines how concurrent clients are handled.
           Available process models include:

                  o   single

                      All Samba services run in a single process. This is not
                      recommended for production configurations.

                  o   standard

                      A process is created for each Samba service, and for
                      those services that support it (currently only LDAP and
                      NETLOGON) a new processes is started for each new client

                      Historically, this was the 'standard' way Samba behaved
                      up until v4.10. Note that this model can be resource
                      intensive if you have a large number of client

                  o   prefork

                      The default. A process is started for each Samba
                      service, and a fixed number of worker processes are
                      started for those services that support it (currently
                      LDAP, NETLOGON, and KDC). The client connections are
                      then shared amongst the worker processes. Requests for
                      services not supporting prefork are handled by a single
                      process for that service.

                      The number of prefork worker processes started is
                      controlled by the smb.conf(5) parameter prefork
                      children, which defaults to 4.

           Set maximum runtime of the server process till autotermination in

           Print information about how Samba was built.

           Display brief usage message.

           Send debug output to STDERR.

           Enable talloc leak reporting on exit.

           Enable full talloc leak reporting on exit.

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

           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.

       -s|--configfile=<configuration file>
           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 "<name>" to value "<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.

           or whatever initialization script your system uses.

           If running the server as a daemon at startup, this file will need
           to contain an appropriate startup sequence for the server.

           If running the server via the meta-daemon inetd, this file must
           contain a mapping of service name (e.g., netbios-ssn) to service
           port (e.g., 139) and protocol type (e.g., tcp).

           This is the default location of the smb.conf(5) server
           configuration file. Other common places that systems install this
           file are /usr/samba/lib/smb.conf and /etc/samba/smb.conf.

           This file describes all the services the server is to make
           available to clients. See smb.conf(5) for more information.

       Most diagnostics issued by the server are logged in a specified log
       file. The log file name is specified at compile time, but may be
       overridden on the command line.

       The number and nature of diagnostics available depends on the debug
       level used by the server. If you have problems, set the debug level to
       3 and peruse the log files.

       Most messages are reasonably self-explanatory. Unfortunately, at the
       time this man page was created, there are too many diagnostics
       available in the source code to warrant describing each and every
       diagnostic. At this stage your best bet is still to grep the source
       code and inspect the conditions that gave rise to the diagnostics you
       are seeing.

       This man page is part of version 4.13.17 of the Samba suite.

       See attributes(7) for descriptions of the following attributes:

       |Availability   | service/network/samba |
       |Stability      | Volatile              |

       hosts_access(5) smb.conf(5), smbclient(8), samba-tool(8), smbd(8),
       nmbd(8), winbindd(1), and the Internet RFC's rfc1001.txt, rfc1002.txt.
       In addition the CIFS (formerly SMB) specification is available as a
       link from the Web page https://www.samba.org/cifs/.

       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.

       Source code for open source software components in Oracle Solaris can
       be found at https://www.oracle.com/downloads/opensource/solaris-source-

       This software was built from source available at
       https://github.com/oracle/solaris-userland.  The original community
       source was downloaded from

       Further information about this software can be found on the open source
       community website at http://www.samba.org/.

Samba 4.13.17                     06/28/2022                          SAMBA(8)