NAME

tftp − trivial file transfer program

SYNOPSIS

tftp [ host ]

AVAILABILITY

This command is available with the Networking Tools and Programs software installation option.  Refer to Installing the SunOS for information on how to install optional software. 

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). 

USAGE

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: 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. 

mode transfer-mode
Set the mode for transfers; transfer-mode may be one of ascii or binary.  The default is ascii. 

put filename

put localfile remotefile

put filename1 filename2 ... filenameN remote-directory
Transfer a file, or a 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 specified host becomes the default for future transfers.  If the remote-directory form is used, the remote host is assumed to be running the UNIX system. 

get filename

get remotename
localname

get filename1 filename2 ... filenameN
Get a file or set of files from the specified remote 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 host specified becomes the default for future transfers. 

quit Exit tftp.  An EOF 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. 

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

WARNING

The default transfer-mode is ascii.  This differs from pre-4.0 Sun (and pre-4.3 BSD) releases, so explicit action must now be taken when transferring non- ASCII files such as executable commands. 

BUGS

Because there is no user-login or validation within the TFTP protocol, many remote sites restrict file access in various ways.  Approved methods for file access are specific to each site, and therefore cannot be documented here. 

Sun Release 4.0  —  Last change: 26 February 1988