tftp(1)                                                             tftp(1)




 NAME    [Toc]    [Back]
      tftp - trivial file transfer program

 SYNOPSIS    [Toc]    [Back]
      tftp [-B val] [-s] [-t val] [host [port]]

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

    Note    [Toc]    [Back]
      tftp now conforms to the RFCs: 2347, 2348, and 2349.

    Options    [Toc]    [Back]
      tftp supports the following new options:

           -B val      Set the block size option for data transfer, in
                       octets. See blksize command for more information.

           -s          Set the use of transfer size option. See tsize
                       command for more information.

           -t val      Set the retransmission timeout option, in seconds.
                       See newrexmt command for more information.

    Commands    [Toc]    [Back]
      Once tftp is running, it issues the prompt tftp> and recognizes the
      following commands:

           connect host [port]
                       Set the host (and optionally port) for transfers.
                       Note that the TFTP protocol, unlike the FTP protocol,
                       does not maintain connections 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 can be one
                       of ascii or binary (default is ascii).

           put file
           put localfile remotefile
           put file1 file2 ... fileN  remotedirectory
                       Put a file or set of files to the specified remote
                       file or directory.  The destination can be in one of



 Hewlett-Packard Company            - 1 -   HP-UX 11i Version 2: August 2003






 tftp(1)                                                             tftp(1)




                       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
                       hostname specified becomes the default for future
                       transfers.  If the remote-directory form is used, the
                       remote host is assumed to be a UNIX-like machine.

           get filename
           get remotename localname
           get file1 file2 ... fileN
                       Get a file or set of files from the specified
                       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 hostname
                       specified becomes the default for future transfers.

           quit        Exit tftp.  Typing the end-of-file character also
                       causes an exit.

           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"

           blksize val Set the block size for data transfer. The client and
                       the server communicate to arrive upon a block size
                       that is suitable for use on the network medium.  The
                       valid range is 8 to 65464 octets. The default value
                       is 512 octets.

           newrexmt val
                       Set the retransmission timeout, in seconds. The
                       client and the server communicate to arrive upon a
                       retransmission timeout value.  The valid range is 1
                       to 255 seconds. The default value is 5 seconds.




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 tftp(1)                                                             tftp(1)




           tsize       Toggles the use of transfer size. This option is
                       implemented for binary mode transfers only. By
                       default, this option is disabled.  If this option is
                       enabled, it allows the receiving side to determine
                       the size of the file being transferred. When the get
                       command is used in binary mode and the size of the
                       file is greater than the free disk space, transfer
                       will be aborted immediately. When the put command is
                       used in binary mode, the size of the file will be
                       sent to the server.

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

 WARNINGS    [Toc]    [Back]
      Since there is no user-login or validation within the TFTP protocol,
      the remote site probably has some sort of file-access restrictions in
      place.  The exact methods are specific to each site and are therefore
      difficult to document here.

 AUTHOR    [Toc]    [Back]
      tftp was developed by the University of California, Berkeley.

 SEE ALSO    [Toc]    [Back]
      tftpd(1M).


 Hewlett-Packard Company            - 3 -   HP-UX 11i Version 2: August 2003