tftp

NAME

tftp - trivial file transfer program

SYNOPSIS

tftp [host]

DESCRIPTION

The tftp(1) utility is the user interface to the Internet Trivial File Transfer Protocol (TFTP), which allows users to transfer files to and from a remote computer. The remote host can be specified on the command line, in which case tftp(1) uses host as the default host for future transfers (see the connect command later in this topic).

COMMANDS

When tftp(1) starts running, it issues the prompt

tftp>
and recognizes the following commands:
? command-name ...
Print help information.
ascii
Shorthand for mode ascii.
binary
Shorthand for mode binary.
connect host-name [port]
Set the host (and optionally port) for transfers. Note that the TFTP protocol, unlike the File Transfer Protocol (FTP), 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 filename
get remotename localname
get file1 file2 ... fileN
Get a file or set of files from the specified sources. The source can be in one of two forms: a file name on the remote host, if the host has already been specified, or a string of the form hosts:filename to specify both a host and file name at the same time. If the latter form is used, the last host name specified becomes the default for future transfers.
mode transfer-mode
Set the mode for transfers; transfer-mode can be either 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 file name on the remote host, if the host has already been specified, or a string of the form hosts:filename to specify both a host and file name at the same time. If the latter form is used, the host name specified becomes the default for future transfers. If the remote-directory form is used, the remote host is assumed to be a computer based on the open standards.
quit
Exit tftp(1). An end of file also exits.
rexmt
retransmission-timeout Set the per-packet retransmission time-out, in seconds.
status
Show current status.
timeout total-transmission-timeout
Set the total transmission time-out, in seconds.
trace
Toggle packet tracing.
verbose
Toggle verbose mode.

NOTES

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.

The commands trace, verbose, and status are good aids for debugging connection problems

SEE ALSO

tftpd(1)