TFTP(1) OpenBSD Reference Manual TFTP(1)NAMEtftp - trivial file transfer program
SYNOPSIStftp [host [port]]
DESCRIPTIONtftp 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 and port may be specified on the command line,
in which case tftp uses them as the default for future transfers (see the
connect command below).
COMMANDS
Once tftp is 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.
blksize block-size
Set the block size in bytes for one packet. The default value
is 512 bytes. Valid values are 8 bytes - 65464 bytes.
connect host [port]
Set the host (and optionally port) for transfers. Note that 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.
get [host:]file [localname]
get [host1:]file1 [host2:]file2 ... [hostN:]fileN
Get a file or set of files from the remote host. When using the
host argument, the host will be used as the default host for
future transfers. If localname is specified, the file is stored
locally as localname, otherwise the original filename is used.
Note that it is not possible to download two files at the same
time; only one, three, or more than three files can be
downloaded at the same time.
mode transfer-mode
Set the mode for transfers; transfer-mode may be one of ascii or
binary. The default is ascii.
put file [[host:]remotename]
put file1 file2 ... fileN [[host:]remote-directory]
Put a file or set of files to the remote host. When using the
host argument, the host will be used as the default host for
future transfers. If remotename is specified, the file is
stored remotely as remotename, otherwise the original filename
is used. If the remote-directory argument is used, the remote
host is assumed to be a UNIX machine.
Note that files may only be written to if they already exist on
the remote host and are publicly writable. See tftpd(8) for
further details.
quit Exit tftp. An end-of-file also exits.
rexmt retransmission-timeout
Set the per-packet retransmission timeout, in seconds. The
default value is 5 seconds. Valid values are 1 second - 255
seconds.
status Show current status.
timeout total-transmission-timeout
Set the total transmission timeout, in seconds. The default
value is 25 seconds. Valid values are 1 second - 255 seconds.
tout Toggle the tout option. This option devlivers the
retransmission timeout, which is set by rexmt, to the server, so
the server uses the same retransmission timeout as the client.
tsize Toggle the tsize option. This option delivers the total size of
the file to be transferred. With this value given, the client
or server can decide whether they are able to accept the file.
trace Toggle packet tracing.
verbose Toggle verbose mode.
SEE ALSOftp(1), tftp-proxy(8), tftpd(8)HISTORY
The tftp command appeared in 4.3BSD.
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.
OpenBSD 4.9 October 22, 2009 OpenBSD 4.9
