Author
This version of
tftp
is maintained by H. Peter Anvin <
Disconnect from tftp server by exiting from tftp shell
In order to quit from the Tftp shell we need to issue the q command.
Download or get file from tftp server
We can also download or get files from the Tftp server to get command. In the example, we get a file named body.txt from the Tftp server.
get body.txtFedora, centos, redhat:
We can install tftp with the following command on Fedora, CentOS, RedHat.
$ yum install tftpIndex
- NAME
- SYNOPSIS
- DESCRIPTION
- OPTIONS
- COMMANDS
- NOTES
- AUTHOR
- SEE ALSO
Name¶
tftp
– IPv4 Trivial File Transfer Protocol client
Notes¶
The TFTP protocol provides no provisions for authentication or security.
Therefore, the remote server will probably implement some kinds of access
restriction or firewalling. These access restrictions are likely to be site-
and server-specific.
This version of
tftp
Options¶
- -4
- Connect with IPv4 only, even if IPv6 support was compiled in.
- -6
- Connect with IPv6 only, if compiled in.
- -ccommand
- Execute command as if it had been entered on the tftp prompt. Must
be specified last on the command line. - -l
- Default to literal mode. Used to avoid special processing of ‘:’ in a file
name. - -mmode
- Set the default transfer mode to mode. This is usually used with
-c. - -Rport:port
- Force the originating port number to be in the specified range of port
numbers. - -v
- Default to verbose mode.
- -V
- Print the version number and configuration to standard output, then exit
gracefully.
See also
tftpd
(8).
Synopsis¶
tftpoptions…
] [
hostport
]] [
-ccommand
Tftp command syntax
We will use following syntax for tftp command in normal command-line usage.
tftp HOSTTftp man page – general commands | mankier
Once tftp is running, it issues the prompt tftp> and recognizes the following commands:
Print help information
Shorthand for mode ascii.
Shorthand for mode binary.
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 a file or set of files from the specified sources. A remote filename can be in one of two forms: a plain 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 hostname specified becomes the default for future transfers. Enable literal mode to prevent special treatment of the ‘:’ character (e.g. C:dirfile).
Toggle literal mode. When set, this mode prevents special treatment of ‘:’ in filenames.
Specify the mode for transfers; transfer-mode may be one of ascii (or netascii) or binary (or octet.) The default is ascii.
Put a file or 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 hostname specified becomes the default for future transfers. If the remote-directory form is used, the remote host is assumed to be a UNIX system or another system using / as directory separator. Enable literal mode to prevent special treatment of the ‘:’ character (e.g. C:dirfile).
Exit tftp. End-of-file will also exit.
Set the per-packet retransmission timeout, in seconds.
Show current status.
Set the total transmission timeout, in seconds.
Toggle packet tracing (a debugging feature.)
Toggle verbose mode.
Tftp server command line interactive shell
After connection to the Tftp server, we will get an interactive shell. In this shell, we will issue commands to get information about status of the connection, download or get files, upload, or put files to the server. We can list available commands provided by Tftp shell with ? .
?Upload or put file to the tftp server
We can upload or put files to the TFTP server with the put command. In the example, we upload a file named body.txt
put body.txtVerbose mode
While making transfer we may need more information about the transmission. We can get more information about the transfer with the verbose mode.
verboseПроект opennet: man tftp (1) команды и прикладные программы пользовательского уровня (freebsd и linux)
When using the
host
argument, the
host
will be used as 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 a time, only
one, three, or more than three files, at a time.
To specify an IPv6 numeric address for a host, wrap it using square
brackets like
“[3ffe:2900:e00c:ffee::1234] : file
”
to disambiguate the
colons used in the IPv6 address from the colon separating the host and
the filename.
