TFTP(1)

NAME
tftp - trivial file transfer program

SYNOPSIS
tftp [ host ]

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).

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 that the TFTP protocol, unlike the FTP protocol, does not maintain connections betweeen 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 file

put localfile remotefile

put file1 file2 ... fileN 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 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. An end of file 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"

blocksize transfer-blocksize
    Set the blocksize that is used for transfers. This assumes that the server knows about RFC1782 and RFC1783 extensions to the TFTP protocol; automatic fallback is supported and will result in a default blocksize of 512 octets.

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

BUGS

Because there is no user-login or validation within the TFTP protocol, the remote site will probably have some sort of file-access restrictions in place. The exact methods are specific to each site and therefore difficult to document here.