Provided by: samba_4.15.13+dfsg-0ubuntu0.20.04.7_amd64 bug


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


       samba [-D|--daemon] [-F|--foreground] [-i|--interactive] [-M|--model=MODEL]
        [--maximum-runtime=seconds] [-b|--show-build] [--no-process-group]
        [-d|--debuglevel=DEBUGLEVEL] [--debug-stdout] [--configfile=CONFIGFILE]
        [--option=name=value] [-l|--log-basename=LOGFILEBASE] [--leak-report]
        [--leak-report-full] [-V|--version]


       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


           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 specified, this parameter causes the samba process to not daemonize, i.e.
           double-fork and disassociate with the terminal.

           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:

                  •   single

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

                  •   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 connection.

                      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 connections.

                  •   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 seconds.

           Print information about how Samba was built.

       -d|--debuglevel=DEBUGLEVEL, --debug-stdout
           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.  This will redirect debug output to STDOUT. By default server daemons
           are logging to a log 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.

           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. 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.

           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.,

           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

           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 4.15.13-Ubuntu of the Samba suite.


       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


       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.