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TFTP(1C)                                                              TFTP(1C)



NAME
       tftp - trivial file transfer program

SYNOPSIS
       tftp [ host ]

AVAILABILITY
       This  command  is  available  with the Networking software installation
       option.  Refer to for information on how to install optional software.

DESCRIPTION
       tftp 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).

USAGE
   Commands
       Once tftp is running, it issues the prompt: tftp>>  and  recognizes  the
       following commands:

       connect host-name [ port ]
              Set  the  host  (and  optionally port) for transfers.  Note: 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.

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

       put filename
       put localfile remotefile
       put filename1 filename2 ... filenameN remote-directory
              Transfer a file, or a set of files, to the specified remote file
              or  directory.   The  destination  can be in one of two forms: a
              filename on the remote host if the host has already been  speci-
              fied, or a string of the form

                     host:filename

              to  specify  both  a host and filename at the same time.  If the
              latter form is used, the specified host becomes the default  for
              future  transfers.   If  the  remote-directory form is used, the
              remote host is assumed to be running the UNIX system.
       get filename
       get remotename localname
       get filename1 filename2 ...  filenameN
              Get a file or set of files from the  specified  remote  sources.
              source can be in one of two forms: a filename on the remote host
              if the host has already been specified, or a string of the form

                     host:filename

              to specify both a host and filename at the same  time.   If  the
              latter form is used, the last host specified becomes the default
              for future transfers.

       quit   Exit tftp.  An EOF also exits.

       verbose
              Toggle verbose mode.

       trace  Toggle packet tracing.

       status Show current status.

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

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

       ascii  Shorthand for mode ascii.

       binary Shorthand for mode binary.

       ? [ command-name ... ]
              Print help information.

WARNING
       The default transfer-mode is ascii.  This differs from pre-4.0 Sun (and
       pre-4.3 BSD) releases, so explicit action must now be taken when trans-
       ferring non-ASCII files such as executable commands.

BUGS
       Because there is no user-login or validation within the TFTP  protocol,
       many remote sites restrict file access in various ways.  Approved meth-
       ods for file access are specific to each site, and therefore cannot  be
       documented here.



                               26 February 1988                       TFTP(1C)