tftp(1N) (TCP/IP) tftp(1N)
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).
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. 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 filename3 ... filenameN
Get a file or set of files (three or more) 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
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tftp(1N) (TCP/IP) tftp(1N)
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.
NOTES
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.
When using the get command to transfer multiple files from a remote
host, three or more files must be specified. The command returns an
error message if only two files are specified.
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