Packages and Binaries:
tftp
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.
Installed size: 53 KB
How to install: sudo apt install tftp
Dependencies:
- libc6
- netbase
tftp
Trivial file transfer program
[email protected]:~# man tftp
TFTP(1) BSD General Commands Manual 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 ma-
chine. 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).
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"
connect host-name [port]
Set the host (and optionally port) for transfers. Note that the
TFTP protocol, unlike the FTP protocol, does not maintain con-
nections betwen 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. 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
hosts:filename to specify both a host and filename at the same
time. If the latter form is used, the last hostname specified
becomes the default for future transfers.
mode transfer-mode
Set the mode for transfers; transfer-mode may be one of 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 di-
rectory. 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 hosts:filename to specify both a host and
filename at the same time. If the latter form is used, the
hostname specified becomes the default for future transfers. If
the remote-directory form is used, the remote host is assumed to
be a UNIX machine.
quit Exit tftp. An end of file also exits.
rexmt retransmission-timeout
Set the per-packet retransmission timeout, in seconds.
status Show current status.
timeout total-transmission-timeout
Set the total transmission timeout, in seconds.
trace Toggle packet tracing.
verbose Toggle verbose mode.
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 dif-
ficult to document here.
HISTORY
The tftp command appeared in 4.3BSD.
Linux NetKit (0.17) August 15, 1999 Linux NetKit (0.17)
tftp
Trivial file transfer program
[email protected]:~# man tftp
TFTP(1) BSD General Commands Manual 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 ma-
chine. 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).
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"
connect host-name [port]
Set the host (and optionally port) for transfers. Note that the
TFTP protocol, unlike the FTP protocol, does not maintain con-
nections betwen 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. 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
hosts:filename to specify both a host and filename at the same
time. If the latter form is used, the last hostname specified
becomes the default for future transfers.
mode transfer-mode
Set the mode for transfers; transfer-mode may be one of 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 di-
rectory. 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 hosts:filename to specify both a host and
filename at the same time. If the latter form is used, the
hostname specified becomes the default for future transfers. If
the remote-directory form is used, the remote host is assumed to
be a UNIX machine.
quit Exit tftp. An end of file also exits.
rexmt retransmission-timeout
Set the per-packet retransmission timeout, in seconds.
status Show current status.
timeout total-transmission-timeout
Set the total transmission timeout, in seconds.
trace Toggle packet tracing.
verbose Toggle verbose mode.
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 dif-
ficult to document here.
HISTORY
The tftp command appeared in 4.3BSD.
Linux NetKit (0.17) August 15, 1999 Linux NetKit (0.17)
tftpd
Tftpd is a server which supports the Internet Trivial File Transfer Protocol (RFC 783). The TFTP server operates at the port indicated in the `tftp' service description; see services(5). The server is normally started by inetd(8).
Warning: Does not support ’tsize’, which is required by some tftp clients, especially PXE, and various other network boot clients. For those, use atftpd or tftpd-hpa.
Installed size: 50 KB
How to install: sudo apt install tftpd
Dependencies:
- libc6
- openbsd-inetd | inet-superserver
in.tftpd
DARPA Trivial File Transfer Protocol server
[email protected]:~# man in.tftpd
TFTPD(8) BSD System Manager's Manual TFTPD(8)
NAME
tftpd -- DARPA Trivial File Transfer Protocol server
SYNOPSIS
tftpd [-n] [-s] [directory ...]
DESCRIPTION
Tftpd is a server which supports the DARPA Trivial File Transfer Proto-
col. The TFTP server operates at the port indicated in the 'tftp' ser-
vice description; see services(5). The server is normally started by
inetd(8).
The use of tftp(1) does not require an account or password on the remote
system. Due to the lack of authentication information, tftpd will allow
only publicly readable files to be accessed. Files may be written only
if they already exist and are publicly writable. Note that this extends
the concept of "public" to include all users on all hosts that can be
reached through the network; this may not be appropriate on all systems,
and its implications should be considered before enabling tftp service.
The server should have the user ID with the lowest possible privilege.
Access to files may be controlled by invoking tftpd with a list of direc-
tories by including pathnames as server program arguments in
/etc/inetd.conf. In this case access is restricted to files whose names
are prefixed by the one of the given directories. If no directories are
supplied the default is /tftpboot. To give out access to the whole
filesystem, should this be desired for some reason, supply / as an argu-
ment.
Unfortunately, on multi-homed systems, it is impossible for tftpd to de-
termine the address on which a packet was received. As a result, tftpd
uses two different mechanisms to guess the best source address to use for
replies. If the socket that inetd(8) passed to tftpd is bound to a par-
ticular address, tftpd uses that address for replies. Otherwise, tftpd
uses ``UDP connect'' to let the kernel choose the reply address based on
the destination of the replies and the routing tables. This means that
most setups will work transparently, while in cases where the reply ad-
dress must be fixed, the virtual hosting feature of inetd(8) can be used
to ensure that replies go out from the correct address. These considera-
tions are important, because most tftp clients will reject reply packets
that appear to come from an unexpected address.
The options are:
-n Suppresses negative acknowledgement of requests for nonexistent
relative filenames.
-s All absolute filenames are treated as if they were preceded by
the first directory argument, or /tftpboot if there is none.
SEE ALSO
tftp(1), inetd(8)
HISTORY
The tftpd command appeared in 4.2BSD.
Linux NetKit (0.17) July 29, 2000 Linux NetKit (0.17)
in.tftpd
DARPA Trivial File Transfer Protocol server
[email protected]:~# man in.tftpd
TFTPD(8) BSD System Manager's Manual TFTPD(8)
NAME
tftpd -- DARPA Trivial File Transfer Protocol server
SYNOPSIS
tftpd [-n] [-s] [directory ...]
DESCRIPTION
Tftpd is a server which supports the DARPA Trivial File Transfer Proto-
col. The TFTP server operates at the port indicated in the 'tftp' ser-
vice description; see services(5). The server is normally started by
inetd(8).
The use of tftp(1) does not require an account or password on the remote
system. Due to the lack of authentication information, tftpd will allow
only publicly readable files to be accessed. Files may be written only
if they already exist and are publicly writable. Note that this extends
the concept of "public" to include all users on all hosts that can be
reached through the network; this may not be appropriate on all systems,
and its implications should be considered before enabling tftp service.
The server should have the user ID with the lowest possible privilege.
Access to files may be controlled by invoking tftpd with a list of direc-
tories by including pathnames as server program arguments in
/etc/inetd.conf. In this case access is restricted to files whose names
are prefixed by the one of the given directories. If no directories are
supplied the default is /tftpboot. To give out access to the whole
filesystem, should this be desired for some reason, supply / as an argu-
ment.
Unfortunately, on multi-homed systems, it is impossible for tftpd to de-
termine the address on which a packet was received. As a result, tftpd
uses two different mechanisms to guess the best source address to use for
replies. If the socket that inetd(8) passed to tftpd is bound to a par-
ticular address, tftpd uses that address for replies. Otherwise, tftpd
uses ``UDP connect'' to let the kernel choose the reply address based on
the destination of the replies and the routing tables. This means that
most setups will work transparently, while in cases where the reply ad-
dress must be fixed, the virtual hosting feature of inetd(8) can be used
to ensure that replies go out from the correct address. These considera-
tions are important, because most tftp clients will reject reply packets
that appear to come from an unexpected address.
The options are:
-n Suppresses negative acknowledgement of requests for nonexistent
relative filenames.
-s All absolute filenames are treated as if they were preceded by
the first directory argument, or /tftpboot if there is none.
SEE ALSO
tftp(1), inetd(8)
HISTORY
The tftpd command appeared in 4.2BSD.
Linux NetKit (0.17) July 29, 2000 Linux NetKit (0.17)
in.tftpd
DARPA Trivial File Transfer Protocol server
[email protected]:~# man in.tftpd
TFTPD(8) BSD System Manager's Manual TFTPD(8)
NAME
tftpd -- DARPA Trivial File Transfer Protocol server
SYNOPSIS
tftpd [-n] [-s] [directory ...]
DESCRIPTION
Tftpd is a server which supports the DARPA Trivial File Transfer Proto-
col. The TFTP server operates at the port indicated in the 'tftp' ser-
vice description; see services(5). The server is normally started by
inetd(8).
The use of tftp(1) does not require an account or password on the remote
system. Due to the lack of authentication information, tftpd will allow
only publicly readable files to be accessed. Files may be written only
if they already exist and are publicly writable. Note that this extends
the concept of "public" to include all users on all hosts that can be
reached through the network; this may not be appropriate on all systems,
and its implications should be considered before enabling tftp service.
The server should have the user ID with the lowest possible privilege.
Access to files may be controlled by invoking tftpd with a list of direc-
tories by including pathnames as server program arguments in
/etc/inetd.conf. In this case access is restricted to files whose names
are prefixed by the one of the given directories. If no directories are
supplied the default is /tftpboot. To give out access to the whole
filesystem, should this be desired for some reason, supply / as an argu-
ment.
Unfortunately, on multi-homed systems, it is impossible for tftpd to de-
termine the address on which a packet was received. As a result, tftpd
uses two different mechanisms to guess the best source address to use for
replies. If the socket that inetd(8) passed to tftpd is bound to a par-
ticular address, tftpd uses that address for replies. Otherwise, tftpd
uses ``UDP connect'' to let the kernel choose the reply address based on
the destination of the replies and the routing tables. This means that
most setups will work transparently, while in cases where the reply ad-
dress must be fixed, the virtual hosting feature of inetd(8) can be used
to ensure that replies go out from the correct address. These considera-
tions are important, because most tftp clients will reject reply packets
that appear to come from an unexpected address.
The options are:
-n Suppresses negative acknowledgement of requests for nonexistent
relative filenames.
-s All absolute filenames are treated as if they were preceded by
the first directory argument, or /tftpboot if there is none.
SEE ALSO
tftp(1), inetd(8)
HISTORY
The tftpd command appeared in 4.2BSD.
Linux NetKit (0.17) July 29, 2000 Linux NetKit (0.17)
Updated on: 2022-Aug-05