tftp(1) UNIX System V(Internet Utilities) 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).
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 string
of the form
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tftp(1) UNIX System V(Internet Utilities) tftp(1)
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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