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Linux in a Nutshell

This directory of Linux commands is from Linux in a Nutshell, 5th Edition.

Click on any of the 687 commands below to get a description and list of available options. All links in the command summaries point to the online version of the book on Safari Bookshelf.

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tftp

tftp [options] [host [port] ] [-c command]

User interface to TFTP (IPv4 Trivial File Transfer Protocol), which allows users to transfer files to and from a remote machine. The remote host may be specified, and optionally the port, in which case tftp uses host as the default host for future transfers. The version of tftp described here is tftp-hpa.

Options

-c command

Run command as though it had been entered at the tftp prompt. Must be last on the tftp command line.

-m mode

Set the default transfer mode. Usually used with -c.

-v

Verbose mode.

-V

Print version and configuration information and exit.

Commands

Once tftp is running, it issues the prompt:

tftp>

and recognizes the following commands:

? [command...]
help [command...]

Print help information. If no command is specified, list the commands and a brief usage message. With a command, list the usage message for that command.

ascii

Shorthand for mode ascii.

binary

Shorthand for mode binary.

connect hostname [port]

Set the hostname, and optionally the port, for transfers.

get filename
get remotename localname
get filename1 filename2 filename3...filenameN

Get a file or set of files from the specified remote sources. The filename can be specified as host:filename to set both host and filename at the same time. In that case, the last host specified becomes the default for future file transfers.

mode transfer-mode

Set the mode for transfers. transfer-mode may be ascii, netascii, binary, octet, or image. The default is ascii.

put filename
put localfile remotefile
put filename1 filename2...filenameN remote-directory

Transfer a file or set of files to the specified remote file or directory. The destination can be specified as host:filename to set both host and filename at the same time. In that case, the last host specified becomes the default for future file transfers. If remote-directory is specified, the remote host is assumed to be a Unix-style system that uses / as the directory path separator.

quit

Exit tftp.

rexmt retransmission-timeout

Set the per-packet retransmission timeout, in seconds.

status

Print status information: whether tftp is connected to a remote host (i.e., whether a host has been specified for the next connection), the current mode, whether verbose and tracing modes are on, and the values for retransmission-timeout and total transmission-timeout.

timeout total-transmission-timeout

Set the total transmission timeout, in seconds.

trace

Toggle packet tracing.

verbose

Toggle verbose mode.