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TELNET(1)		FreeBSD	General	Commands Manual		     TELNET(1)

NAME
     telnet -- user interface to the TELNET protocol

SYNOPSIS
     telnet [-468EFKLNacdfruxy]	[-S tos] [-X authtype] [-e escapechar]
	    [-k	realm] [-l user] [-n tracefile]	[-s src_addr] [host [port]]

DESCRIPTION
     The telnet	command	is used	to communicate with another host using the
     TELNET protocol.  If telnet is invoked without the	host argument, 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 with those arguments.

     Options:

     -4	     Forces telnet to use IPv4 addresses only.

     -6	     Forces telnet to use IPv6 addresses only.

     -8	     Specifies an 8-bit	data path.  This causes	an attempt to negoti-
	     ate the TELNET BINARY option on both input	and output.

     -E	     Stops any character from being recognized as an escape character.

     -F	     If	Kerberos V5 authentication is being used, the -F option	allows
	     the local credentials to be forwarded to the remote system,
	     including any credentials that have already been forwarded	into
	     the local environment.

     -K	     Specifies no automatic login to the remote	system.

     -L	     Specifies an 8-bit	data path on output.  This causes the BINARY
	     option to be negotiated on	output.

     -N	     Prevents IP address to name lookup	when destination host is given
	     as	an IP address.

     -S	tos  Sets the IP type-of-service (TOS) option for the telnet connec-
	     tion to the value tos, which can be a numeric TOS value or, on
	     systems that support it, a	symbolic TOS name found	in the
	     /etc/iptos	file.

     -X	atype
	     Disables the atype	type of	authentication.

     -a	     Attempt automatic login.  This is now the default,	so this	option
	     is	ignored.  Currently, this sends	the user name via the USER
	     variable of the ENVIRON option if supported by the	remote system.
	     The name used is that of the current user as returned by
	     getlogin(2) if it agrees with the current user ID,	otherwise it
	     is	the name associated with the user ID.

     -c	     Disables the reading of the user's	.telnetrc file.	 (See the
	     toggle skiprc command on this man page.)

     -d	     Sets the initial value of the debug toggle	to TRUE.

     -e	escapechar
	     Sets the initial telnet escape character to escapechar.  If
	     escapechar	is omitted, then there will be no escape character.

     -f	     If	Kerberos V5 authentication is being used, the -f option	allows
	     the local credentials to be forwarded to the remote system.

     -k	realm
	     If	Kerberos authentication	is being used, the -k option requests
	     that telnet obtain	tickets	for the	remote host in realm realm
	     instead of	the remote host's realm, as determined by
	     krb_realmofhost(3).

     -l	user
	     When connecting to	the remote system, if the remote system	under-
	     stands the	ENVIRON	option,	then user will be sent to the remote
	     system as the value for the variable USER.	 This option implies
	     the -a option.  This option may also be used with the open	com-
	     mand.

     -n	tracefile
	     Opens tracefile for recording trace information.  See the set
	     tracefile command below.

     -r	     Specifies a user interface	similar	to rlogin(1).  In this mode,
	     the escape	character is set to the	tilde (~) character, unless
	     modified by the -e	option.

     -s	src_addr
	     Set the source IP address for the telnet connection to src_addr,
	     which can be an IP	address	or a host name.

     -u	     Forces telnet to use AF_UNIX addresses only (e.g.,	UNIX domain
	     sockets, accessed with a file path).

     -x	     Turns on encryption of the	data stream if possible.  This is now
	     the default, so this option is ignored.

     -y	     Suppresses	encryption of the data stream.

     host    Indicates the official name, an alias, or the Internet address of
	     a remote host.  If	host starts with a `/',	telnet establishes a
	     connection	to the corresponding named socket.

     port    Indicates a port number (address of an application).  If a	number
	     is	not specified, the default telnet port is used.

     When in rlogin mode, a line of the	form ~.	disconnects from the remote
     host; ~ is	the telnet escape character.  Similarly, the line ~^Z suspends
     the telnet	session.  The line ~^] escapes to the normal telnet escape
     prompt.

     Once a connection has been	opened,	telnet will attempt to enable the
     TELNET LINEMODE option.  If this fails, then telnet will revert to	one of
     two input modes: either ``character at a time'' or	``old line by line''
     depending on what the remote system supports.

     When LINEMODE is enabled, character processing is done on the local sys-
     tem, under	the control of the remote system.  When	input editing or char-
     acter echoing is to be disabled, the remote system	will relay that	infor-
     mation.  The remote system	will also relay	changes	to any special charac-
     ters that happen on the remote system, so that they can take effect on
     the local system.

     In	``character at a time''	mode, most text	typed is immediately sent to
     the remote	host for processing.

     In	``old line by line'' mode, all text is echoed locally, and (normally)
     only completed lines are sent to the remote host.	The ``local echo char-
     acter'' (initially	``^E'')	may be used to turn off	and on the local echo
     (this would mostly	be used	to enter passwords without the password	being
     echoed).

     If	the LINEMODE option is enabled,	or if the localchars toggle is TRUE
     (the default for ``old line by line''; see	below),	the user's quit, intr,
     and flush characters are trapped locally, and sent	as TELNET protocol
     sequences to the remote side.  If LINEMODE	has ever been enabled, then
     the user's	susp and eof are also sent as TELNET protocol sequences, and
     quit is sent as a TELNET ABORT instead of BREAK.  There are options (see
     toggle autoflush and toggle autosynch below) which	cause this action to
     flush subsequent output to	the terminal (until the	remote host acknowl-
     edges the TELNET sequence)	and flush previous terminal input (in the case
     of	quit and intr).

     While connected to	a remote host, telnet command mode may be entered by
     typing the	telnet ``escape	character'' (initially ``^]'').	 When in com-
     mand mode,	the normal terminal editing conventions	are available.

     The following telnet commands are available.  Only	enough of each command
     to	uniquely identify it need be typed (this is also true for arguments to
     the mode, set, toggle, unset, slc,	environ, and display commands).

     auth argument ...
		The auth command manipulates the information sent through the
		TELNET AUTHENTICATE option.  Valid arguments for the auth com-
		mand are:

		disable	type  Disables the specified type of authentication.
			      To obtain	a list of available types, use the
			      auth disable ? command.

		enable type   Enables the specified type of authentication.
			      To obtain	a list of available types, use the
			      auth enable ? command.

		status	      Lists the	current	status of the various types of
			      authentication.

     close	Close a	TELNET session and return to command mode.

     display argument ...
		Displays all, or some, of the set and toggle values (see
		below).

     encrypt argument ...
		The encrypt command manipulates	the information	sent through
		the TELNET ENCRYPT option.

		Valid arguments	for the	encrypt	command	are:

		disable	type [input | output]
			      Disables the specified type of encryption.  If
			      you omit the input and output, both input	and
			      output are disabled.  To obtain a	list of	avail-
			      able types, use the encrypt disable ? command.

		enable type [input | output]
			      Enables the specified type of encryption.	 If
			      you omit input and output, both input and	output
			      are enabled.  To obtain a	list of	available
			      types, use the encrypt enable ? command.

		input	      This is the same as the encrypt start input com-
			      mand.

		-input	      This is the same as the encrypt stop input com-
			      mand.

		output	      This is the same as the encrypt start output
			      command.

		-output	      This is the same as the encrypt stop output com-
			      mand.

		start [input | output]
			      Attempts to start	encryption.  If	you omit input
			      and output, both input and output	are enabled.
			      To obtain	a list of available types, use the
			      encrypt enable ? command.

		status	      Lists the	current	status of encryption.

		stop [input | output]
			      Stops encryption.	 If you	omit input and output,
			      encryption is on both input and output.

		type type     Sets the default type of encryption to be	used
			      with later encrypt start or encrypt stop com-
			      mands.

     environ arguments ...
		The environ command is used to manipulate the variables	that
		may be sent through the	TELNET ENVIRON option.	The initial
		set of variables is taken from the users environment, with
		only the DISPLAY and PRINTER variables being exported by
		default.  The USER variable is also exported if	the -a or -l
		options	are used.

		Valid arguments	for the	environ	command	are:

		define variable	value
			    Define the variable	variable to have a value of
			    value.  Any	variables defined by this command are
			    automatically exported.  The value may be enclosed
			    in single or double	quotes so that tabs and	spaces
			    may	be included.

		undefine variable
			    Remove variable from the list of environment vari-
			    ables.

		export variable
			    Mark the variable variable to be exported to the
			    remote side.

		unexport variable
			    Mark the variable variable to not be exported
			    unless explicitly asked for	by the remote side.

		list	    List the current set of environment	variables.
			    Those marked with a	* will be sent automatically,
			    other variables will only be sent if explicitly
			    requested.

		?	    Prints out help information	for the	environ	com-
			    mand.

     logout	Sends the TELNET LOGOUT	option to the remote side.  This com-
		mand is	similar	to a close command; however, if	the remote
		side does not support the LOGOUT option, nothing happens.  If,
		however, the remote side does support the LOGOUT option, this
		command	should cause the remote	side to	close the TELNET con-
		nection.  If the remote	side also supports the concept of sus-
		pending	a user's session for later reattachment, the logout
		argument indicates that	you should terminate the session imme-
		diately.

     mode type	Type is	one of several options,	depending on the state of the
		TELNET session.	 The remote host is asked for permission to go
		into the requested mode.  If the remote	host is	capable	of
		entering that mode, the	requested mode will be entered.

		character     Disable the TELNET LINEMODE option, or, if the
			      remote side does not understand the LINEMODE
			      option, then enter ``character at	a time'' mode.

		line	      Enable the TELNET	LINEMODE option, or, if	the
			      remote side does not understand the LINEMODE
			      option, then attempt to enter ``old-line-by-
			      line'' mode.

		isig (-isig)  Attempt to enable	(disable) the TRAPSIG mode of
			      the LINEMODE option.  This requires that the
			      LINEMODE option be enabled.

		edit (-edit)  Attempt to enable	(disable) the EDIT mode	of the
			      LINEMODE option.	This requires that the
			      LINEMODE option be enabled.

		softtabs (-softtabs)
			      Attempt to enable	(disable) the SOFT_TAB mode of
			      the LINEMODE option.  This requires that the
			      LINEMODE option be enabled.

		litecho	(-litecho)
			      Attempt to enable	(disable) the LIT_ECHO mode of
			      the LINEMODE option.  This requires that the
			      LINEMODE option be enabled.

		?	      Prints out help information for the mode com-
			      mand.

     open [-l user] [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(5)), an	Internet address specified in the
		``dot notation'' (see inet(3)),	or IPv6	host name or IPv6
		coloned-hexadecimal addreess.  The -l option may be used to
		specify	the user name to be passed to the remote system	via
		the ENVIRON option.  When connecting to	a non-standard port,
		telnet omits any automatic initiation of TELNET	options.  When
		the port number	is preceded by a minus sign, the initial
		option negotiation is done.  When, however, the	port number is
		preceded by a plus sign, any option negotiation	and under-
		standing is prohibited,	making telnet dumb client for
		POP3/SMTP/NNTP/HTTP-like protocols with	any data including
		TELNET IAC character (0xff).  After establishing a connection,
		the file .telnetrc in the users	home directory is opened.
		Lines beginning	with a # are comment lines.  Blank lines are
		ignored.  Lines	that begin without white space are the start
		of a machine entry.  The first thing on	the line is the	name
		of the machine that is being connected to.  It may be the
		hostname or numeric address specified as the argument host,
		the canonical name of that string as determined	by
		getaddrinfo(3),	or the string ``DEFAULT'' indicating all
		hosts.	The rest of the	line, and successive lines that	begin
		with white space are assumed to	be telnet commands and are
		processed as if	they had been typed in manually	to the telnet
		command	prompt.

     quit	Close any open TELNET session and exit telnet.	An end of file
		(in command mode) will also close a session and	exit.

     send arguments
		Sends one or more special character sequences to the remote
		host.  The following are the arguments which may be specified
		(more than one argument	may be specified at a time):

		abort	Sends the TELNET ABORT (Abort processes) sequence.

		ao	Sends the TELNET AO (Abort Output) sequence, which
			should cause the remote	system to flush	all output
			from the remote	system to the user's terminal.

		ayt	Sends the TELNET AYT (Are You There) sequence, to
			which the remote system	may or may not choose to
			respond.

		brk	Sends the TELNET BRK (Break) sequence, which may have
			significance to	the remote system.

		ec	Sends the TELNET EC (Erase Character) sequence,	which
			should cause the remote	system to erase	the last char-
			acter entered.

		el	Sends the TELNET EL (Erase Line) sequence, which
			should cause the remote	system to erase	the line cur-
			rently being entered.

		eof	Sends the TELNET EOF (End Of File) sequence.

		eor	Sends the TELNET EOR (End of Record) sequence.

		escape	Sends the current telnet escape	character (initially
			``^'').

		ga	Sends the TELNET GA (Go	Ahead) sequence, which likely
			has no significance to the remote system.

		getstatus
			If the remote side supports the	TELNET STATUS command,
			getstatus will send the	subnegotiation to request that
			the server send	its current option status.

		ip	Sends the TELNET IP (Interrupt Process)	sequence,
			which should cause the remote system to	abort the cur-
			rently running process.

		nop	Sends the TELNET NOP (No OPeration) sequence.

		susp	Sends the TELNET SUSP (SUSPend process)	sequence.

		synch	Sends the TELNET SYNCH sequence.  This sequence	causes
			the remote system to discard all previously typed (but
			not yet	read) input.  This sequence is sent as TCP
			urgent data (and may not work if the remote system is
			a 4.2BSD system	-- if it doesn't work, a lower case
			``r'' may be echoed on the terminal).

		do cmd

		dont cmd

		will cmd

		wont cmd
			Sends the TELNET DO cmd	sequence.  Cmd can be either a
			decimal	number between 0 and 255, or a symbolic	name
			for a specific TELNET command.	Cmd can	also be	either
			help or	? to print out help information, including a
			list of	known symbolic names.

		?	Prints out help	information for	the send command.

     set argument value

     unset argument value
		The set	command	will set any one of a number of	telnet vari-
		ables to a specific value or to	TRUE.  The special value off
		turns off the function associated with the variable, this is
		equivalent to using the	unset command.	The unset command will
		disable	or set to FALSE	any of the specified functions.	 The
		values of variables may	be interrogated	with the display com-
		mand.  The variables which may be set or unset,	but not	tog-
		gled, are listed here.	In addition, any of the	variables for
		the toggle command may be explicitly set or unset using	the
		set and	unset commands.

		ayt	If TELNET is in	localchars mode, or LINEMODE is
			enabled, and the status	character is typed, a TELNET
			AYT sequence (see send ayt preceding) is sent to the
			remote host.  The initial value	for the	``Are You
			There''	character is the terminal's status character.

		echo	This is	the value (initially ``^E'') which, when in
			``line by line'' mode, toggles between doing local
			echoing	of entered characters (for normal processing),
			and suppressing	echoing	of entered characters (for
			entering, say, a password).

		eof	If telnet is operating in LINEMODE or ``old line by
			line'' mode, entering this character as	the first
			character on a line will cause this character to be
			sent to	the remote system.  The	initial	value of the
			eof character is taken to be the terminal's eof	char-
			acter.

		erase	If telnet is in	localchars mode	(see toggle localchars
			below),	and if telnet is operating in ``character at a
			time'' mode, then when this character is typed,	a
			TELNET EC sequence (see	send ec	above) is sent to the
			remote system.	The initial value for the erase	char-
			acter is taken to be the terminal's erase character.

		escape	This is	the telnet escape character (initially ``^['')
			which causes entry into	telnet command mode (when con-
			nected to a remote system).

		flushoutput
			If telnet is in	localchars mode	(see toggle localchars
			below) and the flushoutput character is	typed, a
			TELNET AO sequence (see	send ao	above) is sent to the
			remote host.  The initial value	for the	flush charac-
			ter is taken to	be the terminal's flush	character.

		forw1

		forw2	If telnet is operating in LINEMODE, these are the
			characters that, when typed, cause partial lines to be
			forwarded to the remote	system.	 The initial value for
			the forwarding characters are taken from the termi-
			nal's eol and eol2 characters.

		interrupt
			If telnet is in	localchars mode	(see toggle localchars
			below) and the interrupt character is typed, a TELNET
			IP sequence (see send ip above)	is sent	to the remote
			host.  The initial value for the interrupt character
			is taken to be the terminal's intr character.

		kill	If telnet is in	localchars mode	(see toggle localchars
			below),	and if telnet is operating in ``character at a
			time'' mode, then when this character is typed,	a
			TELNET EL sequence (see	send el	above) is sent to the
			remote system.	The initial value for the kill charac-
			ter is taken to	be the terminal's kill character.

		lnext	If telnet is operating in LINEMODE or ``old line by
			line'' mode, then this character is taken to be	the
			terminal's lnext character.  The initial value for the
			lnext character	is taken to be the terminal's lnext
			character.

		quit	If telnet is in	localchars mode	(see toggle localchars
			below) and the quit character is typed,	a TELNET BRK
			sequence (see send brk above) is sent to the remote
			host.  The initial value for the quit character	is
			taken to be the	terminal's quit	character.

		reprint
			If telnet is operating in LINEMODE or ``old line by
			line'' mode, then this character is taken to be	the
			terminal's reprint character.  The initial value for
			the reprint character is taken to be the terminal's
			reprint	character.

		rlogin	This is	the rlogin escape character.  If set, the nor-
			mal telnet escape character is ignored unless it is
			preceded by this character at the beginning of a line.
			This character,	at the beginning of a line followed by
			a "." closes the connection; when followed by a	^Z it
			suspends the telnet command.  The initial state	is to
			disable	the rlogin escape character.

		start	If the TELNET TOGGLE-FLOW-CONTROL option has been
			enabled, then this character is	taken to be the	termi-
			nal's start character.	The initial value for the
			start character	is taken to be the terminal's start
			character.

		stop	If the TELNET TOGGLE-FLOW-CONTROL option has been
			enabled, then this character is	taken to be the	termi-
			nal's stop character.  The initial value for the stop
			character is taken to be the terminal's	stop charac-
			ter.

		susp	If telnet is in	localchars mode, or LINEMODE is
			enabled, and the suspend character is typed, a TELNET
			SUSP sequence (see send	susp above) is sent to the
			remote host.  The initial value	for the	suspend	char-
			acter is taken to be the terminal's suspend character.

		tracefile
			This is	the file to which the output, caused by
			netdata	or option tracing being	TRUE, will be written.
			If it is set to	``-'', then tracing information	will
			be written to standard output (the default).

		worderase
			If telnet is operating in LINEMODE or ``old line by
			line'' mode, then this character is taken to be	the
			terminal's worderase character.	 The initial value for
			the worderase character	is taken to be the terminal's
			worderase character.

		?	Displays the legal set (unset) commands.

     opie sequence challenge
		The opie command computes a response to	the OPIE challenge.

     slc state	The slc	command	(Set Local Characters) is used to set or
		change the state of the	special	characters when	the TELNET
		LINEMODE option	has been enabled.  Special characters are
		characters that	get mapped to TELNET commands sequences	(like
		ip or quit) or line editing characters (like erase and kill).
		By default, the	local special characters are exported.

		check	    Verify the current settings	for the	current	spe-
			    cial characters.  The remote side is requested to
			    send all the current special character settings,
			    and	if there are any discrepancies with the	local
			    side, the local side will switch to	the remote
			    value.

		export	    Switch to the local	defaults for the special char-
			    acters.  The local default characters are those of
			    the	local terminal at the time when	telnet was
			    started.

		import	    Switch to the remote defaults for the special
			    characters.	 The remote default characters are
			    those of the remote	system at the time when	the
			    TELNET connection was established.

		?	    Prints out help information	for the	slc command.

     status	Show the current status	of telnet.  This includes the peer one
		is connected to, as well as the	current	mode.

     toggle arguments ...
		Toggle (between	TRUE and FALSE)	various	flags that control how
		telnet responds	to events.  These flags	may be set explicitly
		to TRUE	or FALSE using the set and unset commands listed
		above.	More than one argument may be specified.  The state of
		these flags may	be interrogated	with the display command.
		Valid arguments	are:

		authdebug     Turns on debugging information for the authenti-
			      cation code.

		autoflush     If autoflush and localchars are both TRUE, then
			      when the ao, or quit characters are recognized
			      (and transformed into TELNET sequences; see set
			      above for	details), telnet refuses to display
			      any data on the user's terminal until the	remote
			      system acknowledges (via a TELNET	TIMING MARK
			      option) that it has processed those TELNET
			      sequences.  The initial value for	this toggle is
			      TRUE if the terminal user	had not	done an	"stty
			      noflsh", otherwise FALSE (see stty(1)).

		autodecrypt   When the TELNET ENCRYPT option is	negotiated, by
			      default the actual encryption (decryption) of
			      the data stream does not start automatically.
			      The autoencrypt (autodecrypt) command states
			      that encryption of the output (input) stream
			      should be	enabled	as soon	as possible.

		autologin     If the remote side supports the TELNET
			      AUTHENTICATION option telnet attempts to use it
			      to perform automatic authentication.  If the
			      AUTHENTICATION option is not supported, the
			      user's login name	are propagated through the
			      TELNET ENVIRON option.  This command is the same
			      as specifying -a option on the open command.

		autosynch     If autosynch and localchars are both TRUE, then
			      when either the intr or quit characters is typed
			      (see set above for descriptions of the intr and
			      quit characters),	the resulting TELNET sequence
			      sent is followed by the TELNET SYNCH sequence.
			      This procedure should cause the remote system to
			      begin throwing away all previously typed input
			      until both of the	TELNET sequences have been
			      read and acted upon.  The	initial	value of this
			      toggle is	FALSE.

		binary	      Enable or	disable	the TELNET BINARY option on
			      both input and output.

		inbinary      Enable or	disable	the TELNET BINARY option on
			      input.

		outbinary     Enable or	disable	the TELNET BINARY option on
			      output.

		crlf	      If this is TRUE, then carriage returns will be
			      sent as <CR><LF>.	 If this is FALSE, then	car-
			      riage returns will be send as <CR><NUL>.	The
			      initial value for	this toggle is FALSE.

		crmod	      Toggle carriage return mode.  When this mode is
			      enabled, most carriage return characters
			      received from the	remote host will be mapped
			      into a carriage return followed by a line	feed.
			      This mode	does not affect	those characters typed
			      by the user, only	those received from the	remote
			      host.  This mode is not very useful unless the
			      remote host only sends carriage return, but
			      never line feed.	The initial value for this
			      toggle is	FALSE.

		debug	      Toggles socket level debugging (useful only to
			      the super	user).	The initial value for this
			      toggle is	FALSE.

		encdebug      Turns on debugging information for the encryp-
			      tion code.

		localchars    If this is TRUE, then the	flush, interrupt,
			      quit, erase, and kill characters (see set	above)
			      are recognized locally, and transformed into
			      (hopefully) appropriate TELNET control sequences
			      (respectively ao,	ip, brk, ec, and el; see send
			      above).  The initial value for this toggle is
			      TRUE in ``old line by line'' mode, and FALSE in
			      ``character at a time'' mode.  When the LINEMODE
			      option is	enabled, the value of localchars is
			      ignored, and assumed to always be	TRUE.  If
			      LINEMODE has ever	been enabled, then quit	is
			      sent as abort, and eof and suspend are sent as
			      eof and susp (see	send above).

		netdata	      Toggles the display of all network data (in
			      hexadecimal format).  The	initial	value for this
			      toggle is	FALSE.

		options	      Toggles the display of some internal telnet pro-
			      tocol processing (having to do with TELNET
			      options).	 The initial value for this toggle is
			      FALSE.

		prettydump    When the netdata toggle is enabled, if
			      prettydump is enabled the	output from the
			      netdata command will be formatted	in a more user
			      readable format.	Spaces are put between each
			      character	in the output, and the beginning of
			      any telnet escape	sequence is preceded by	a '*'
			      to aid in	locating them.

		skiprc	      When the skiprc toggle is	TRUE, telnet skips the
			      reading of the .telnetrc file in the users home
			      directory	when connections are opened.  The ini-
			      tial value for this toggle is FALSE.

		termdata      Toggles the display of all terminal data (in
			      hexadecimal format).  The	initial	value for this
			      toggle is	FALSE.

		verbose_encrypt
			      When the verbose_encrypt toggle is TRUE, telnet
			      prints out a message each	time encryption	is
			      enabled or disabled.  The	initial	value for this
			      toggle is	FALSE.

		?	      Displays the legal toggle	commands.

     z		Suspend	telnet.	 This command only works when the user is
		using the csh(1).

     ! [command]
		Execute	a single command in a subshell on the local system.
		If command is omitted, then an interactive subshell is
		invoked.

     ? [command]
		Get help.  With	no arguments, telnet prints a help summary.
		If command is specified, telnet	will print the help informa-
		tion for just that command.

ENVIRONMENT
     telnet uses at least the HOME, SHELL, DISPLAY, and	TERM environment vari-
     ables.  Other environment variables may be	propagated to the other	side
     via the TELNET ENVIRON option.

FILES
     ~/.telnetrc  user customized telnet startup values

SEE ALSO
     rlogin(1),	rsh(1),	hosts(5), nologin(5), telnetd(8)

HISTORY
     The telnet	command	appeared in 4.2BSD.

     IPv6 support was added by WIDE/KAME project.

NOTES
     On	some remote systems, echo has to be turned off manually	when in	``old
     line by line'' mode.

     In	``old line by line'' mode or LINEMODE the terminal's eof character is
     only recognized (and sent to the remote system) when it is	the first
     character on a line.

FreeBSD	9.3		      September	18, 2006		   FreeBSD 9.3

NAME | SYNOPSIS | DESCRIPTION | ENVIRONMENT | FILES | SEE ALSO | HISTORY | NOTES

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