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TFTP(1)                 FreeBSD General Commands Manual                TFTP(1)

     tftp -- trivial file transfer program

     tftp [host [port]]

     The tftp utility is the user interface to the Internet TFTP (Trivial File
     Transfer Protocol), which allows users to transfer files to and from a
     remote machine.  The remote host may be specified on the command line, in
     which case tftp uses host as the default host for future transfers (see
     the connect command below).

     Once tftp is running, it issues the prompt ``tftp>'' and recognizes the
     following commands:

     ? command-name ...
              Print help information.

     ascii    Shorthand for "mode ascii"

     binary   Shorthand for "mode binary"

     connect host [port]
              Set the host (and optionally port) for transfers.  Note that the
              TFTP protocol, unlike the FTP protocol, does not maintain con-
              nections between transfers; thus, the connect command does not
              actually create a connection, but merely remembers what host is
              to be used for transfers.  You do not have to use the connect
              command; the remote host can be specified as part of the get or
              put commands.

     get [host:]file [localname]
     get [host1:]file1 [host2:]file2 ... [hostN:]fileN
              Get one or more files from the remote host.  When using the host
              argument, the host will be used as default host for future
              transfers.  If localname is specified, the file is stored
              locally as localname, otherwise the original filename is used.
              Note that it is not possible to download two files at a time,
              only one, three, or more than three files, at a time.

              To specify an IPv6 numeric address for a host, wrap it using
              square brackets like ``[3ffe:2900:e00c:ffee::1234]:file'' to
              disambiguate the colons used in the IPv6 address from the colon
              separating the host and the filename.

     mode transfer-mode
              Set the mode for transfers; transfer-mode may be one of ascii or
              binary.  The default is ascii.

     put file [[host:]remotename]
     put file1 file2 ... fileN [[host:]remote-directory]
              Put a file or set of files to the remote host.  When remotename
              is specified, the file is stored remotely as remotename, other-
              wise the original filename is used.  If the remote-directory
              argument is used, the remote host is assumed to be a UNIX
              machine.  To specify an IPv6 numeric address for a host, see the
              example under the get command.

     quit     Exit tftp.  An end of file also exits.

     rexmt retransmission-timeout
              Set the per-packet retransmission timeout, in seconds.

     status   Show current status.

     timeout total-transmission-timeout
              Set the total transmission timeout, in seconds.

     trace    Toggle packet tracing.

     verbose  Toggle verbose mode.

     The tftp command appeared in 4.3BSD.

     Because there is no user-login or validation within the TFTP protocol,
     the remote site will probably have some sort of file-access restrictions
     in place.  The exact methods are specific to each site and therefore dif-
     ficult to document here.

     Files larger than 33488896 octets (65535 blocks) cannot be transferred
     without client and server supporting blocksize negotiation (RFC1783).

FreeBSD 6.2                     October 1, 2003                    FreeBSD 6.2


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