tftp(1) [redhat man page]

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

NAME

       tftp - IPv4 Trivial File Transfer Protocol client

SYNOPSIS

       tftp [options...]  [host]

DESCRIPTION

       tftp  is  a  client for the IPv4 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

       -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.

       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.

       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 0.32							 13 November 2001							   TFTP(1)

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tftp(1c) tftp(1c)

Name
tftp - trivial file transfer program

Syntax
tftp [host] [port]

Description
The command provides the user interface to the Internet standard Trivial File Transfer Protocol. The program allows a user to transfer
files to and from a remote network site. The remote host can be specified on the command line. If you specify the remote host on the com-
mand line uses host as the default host for future transfers.

If a port is specified, uses that port number instead of the standard service port. When the user invokes the program enters its command
interpreter and awaits instructions. The prompt tftp> is displayed on the screen.

The following commands are recognized by

? Displays a help message that gives a brief summary of the commands.

ascii Specifies mode ascii.

binary Specifies mode binary.

connect host-name [ port ]
Sets the host and, optionally, sets port for transfers. Note that the TFTP protocol does not maintain connections
between transfers. Because merely remembers what host should be used for transfers instead of actually creating a con-
nection, it is not necessary to use the command. The remote host can be specified as part of the or commands.

get remote-file... [ local-file ]
Gets a file or set of files from the specified sources. If the host has already been specified, the source can be in
the form of a filename on the remote host. If the host has not been specified, the source can be a string of the form
host:file, specifying both a host and filename at the same time. If the latter form is used, the last hostname entered
becomes the default for future transfers.

mode Sets the file transfer type to network ASCII or binary. The default type is network ASCII.

put local-file... [ remote-file/directory ]
Puts a file or set of files to the specified remote file or directory. If the remote host has already been specified,
the destination can be a filename on it. If the remote host has not been specified, the destination can be a string of
the form host:filename, specifying both a host and filename at the same time. If the latter form is used, the last
hostname entered becomes the default for future transfers. If the remote-directory form is used, the remote host is
assumed to be a UNIX machine.

quit Exits the program.

rexmt Sets the retransmit timer.

status Shows what believes to be the current connection status.

timeout Set the transaction timeout.

trace Sets the packet trace flag.

verbose Sets the verbose mode flag.

Restrictions
Since the TFTP protocol does not support any authentication, files must be world read (writable) on the remote system.

Because there is no user-login validation within the TFTP protocol, the remote site should have some sort of file access restrictions in
place. The exact methods are specific to each site.

tftp(1c)

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tftp(1) [redhat man page]

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