TFTP(1) 							   User's Manual							   TFTP(1)

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 connec-
	      tions 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 com-
	      mands.

       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:dirfile).

       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-direc-
	      tory 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:dirfile).

       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).

tftp-hpa 5.2							   23 July 2008 							   TFTP(1)