telnet(1N) telnet(1N)
NAME
telnet - user interface to the TELNET protocol
SYNOPSIS
telnet [host[port]]
DESCRIPTION
telnet is used to communicate with another host using the
TELNET protocol, provided both hosts support telnet. If
telnet is invoked without arguments, it enters command mode,
indicated by its prompt (telnet>). In this mode, it accepts
and executes the commands listed below. If it is invoked
with arguments, it performs an open command (see below) with
those arguments.
Once a connection has been opened, telnet enters input mode.
In this mode, text typed is sent to the remote host. To
issue telnet commands when in input mode, precede them with
the telnet escape character (initially ^] [ASCII ESCAPE]).
When in command mode, the normal terminal editing
conventions are available.
The following commands are available. Only enough of each
command to identify it uniquely need be typed.
open host [port]
Open a connection to the named host. If no port number
is specified, telnet will attempt to contact a TELNET
server at the default port. The host specification may
be either a host name (see hosts(4N)) or an Internet
address specified in the dot notation.
close
Close a TELNET session and return to command mode.
quit Close any open TELNET session and exit telnet.
z Suspend telnet.
ESCAPE[escape-char]
Set the telnet escape character. Control characters
may be specified as ^ followed by a single (uppercase
version of a) letter; e.g. .ft3 -x is ^X.
status
Show the current status of telnet. This includes the
peer one is connected to, as well as the state of
debugging.
options
Toggle viewing of TELNET options processing. When
options viewing is enabled, all TELNET option
Page 1 (last mod. 1/16/87)
telnet(1N) telnet(1N)
negotiations will be displayed. Options sent by telnet
are displayed as SENT, while options received from the
TELNET server are displayed as RCVD.
crmod
Toggle carriage return mode. When this mode is
enabled, any carriage return (RETURN) characters
received from the remote host will be mapped into a
RETURN and a This mode does not affect those characters
typed by the user, only those received. This mode is
not very useful, but is required for some hosts that
like to ask the user to do local echoing.
? [command]
Get help. With no arguments, telnet prints a help
summary. If a command is specified, telnet will print
the help information available about the command only.
FILES
/usr/bin/telnet
BUGS
This implementation is very simple, because rlogin(1N) is
the standard mechanism used to communicate locally with
hosts.
Page 2 (last mod. 1/16/87)