svnserve allows access to Subversion      repositories using the svn network protocol.
      You can run svnserve either as a standalone server process, or
      you can have another process, such as inetd,
      xinetd or sshd, launch it
      for you.
Once the client has selected a repository by transmitting
      its URL, svnserve reads a file named
      conf/svnserve.conf in the repository
      directory to determine repository-specific settings such as what
      authentication database to use and what authorization policies
      to apply.  See the section called “svnserve, a custom server” for details of
      the svnserve.conf file.
Unlike the previous commands we've described. svnserve has no subcommands—svnserve is controlled exclusively by switches.
--daemon (-d)Causes svnserve to run in daemon mode. svnserve backgrounds itself and accepts and serves TCP/IP connections on the svn port (3690, by default).
--listen-port=PORTCauses svnserve to listen on
              PORT when run in daemon
              mode.
--listen-host=HOSTCauses svnserve to listen on the
              interface specified by HOST,
              which may be either a hostname or an IP address.
--foregroundWhen used together with -d, this
              switch causes svnserve to stay in the
              foreground.  This switch is mainly useful for
              debugging.
--inetd (-i)Causes svnserve to use the stdin/stdout file descriptors, as is appropriate for a daemon running out of inetd.
--help (-h)Displays a usage summary and exits.
--versionDisplays version information, a list of repository back-end modules available, and exits.
--root=ROOT
          (-r=ROOT)Sets the virtual root for repositories served by svnserve. The pathname in URLs provided by the client will be interpreted relative to this root, and will not be allowed to escape this root.
--tunnel (-t)Causes svnserve to run in tunnel mode, which is just like the inetd mode of operation (serve one connection over stdin/stdout) except that the connection is considered to be pre-authenticated with the username of the current uid. This flag is selected by the client when running over a tunnel agent such as ssh.
--tunnel-user NAMEUsed in conjunction with --tunnel
              switch; tells svnserve to assume that
              NAME is the authenticated
              user, rather than the UID of the svnserve
              process.  Useful for users wishing to share a single
              system account over SSH, but maintaining separate commit
              identities.
--threads (-T)When running in daemon mode, causes svnserve to spawn a thread instead of a process for each connection. The svnserve process still backgrounds itself at startup time.
--listen-once (-X)Causes svnserve to accept one connection on the svn port, serve it, and exit. This option is mainly useful for debugging.