NAME

       tftp - IPv4 Trivial File Transfer Protocol client

SYNOPSIS

       tftp [ options... ] [host [port]] [-c command]

DESCRIPTION

       tftp  is  a  client  for the Trivial file Transfer Protocol, which can be used to transfer
       files to and from remote machines, including some  very  minimalistic,  usually  embedded,
       systems.   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.)

OPTIONS

       -4     Connect with IPv4 only, even if IPv6 support was compiled in.

       -6     Connect with IPv6 only, if compiled in.

       -c command
              Execute command as if it had been entered on the tftp prompt.   Must  be  specified
              last on the command line.

       -l     Default to literal mode. Used to avoid special processing of ':' in a file name.

       -m mode
              Set the default transfer mode to mode.  This is usually used with -c.

       -R port:port
              Force the originating port number to be in the specified range of port numbers.

       -v     Default to verbose mode.

       -V     Print   the  version  number  and  configuration  to  standard  output,  then  exit
              gracefully.

COMMANDS

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

       ? command-name...

       help 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 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.

       get file
       get remotefile localfile
       get file1 file2 file3...
              Get a file or set of files from the specified sources.  A remote filename can be in
              one of two forms: a plain 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.  Enable literal mode to  prevent  special
              treatment of the ':' character (e.g. C:\dir\file).

       literal
              Toggle  literal  mode.   When  set,  this mode prevents special treatment of ':' in
              filenames.

       mode transfer-mode
              Specify the mode for transfers; transfer-mode may be one of ascii (or netascii)  or
              binary (or octet.)  The default is ascii.

       put file
       put localfile remotefile
       put file1 file2 file3... remote-directory
              Put  a  file  or  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 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 system or another system  using  /
              as  directory  separator.   Enable literal mode to prevent special treatment of the
              ':' character (e.g. C:\dir\file).

       quit   Exit tftp.  End-of-file will also exit.

       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 (a debugging feature.)

       verbose
              Toggle verbose mode.

NOTES

       The TFTP protocol provides no provisions for authentication or security.   Therefore,  the
       remote  server  will  probably  implement some kinds of access restriction or firewalling.
       These access restrictions are likely to be site- and server-specific.

AUTHOR

       This version of tftp is maintained by H. Peter  Anvin  <hpa@zytor.com>.   It  was  derived
       from,  but  has substantially diverged from, an OpenBSD source base, with added patches by
       Markus Gutschke and Gero Kulhman.

SEE ALSO

       tftpd(8).