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TELNET(1)		    General Commands Manual		     TELNET(1)

NAME
       telnet -	user interface to the TELNET protocol

SYNOPSIS
       telnet  [-8]  [-E] [-F] [-K] [-L] [-S tos] [-X authtype]	[-a] [-c] [-d]
       [-e escapechar] [-f] [-k	realm] [-l  user]  [-n	tracefile]  [-r]  [-x]
       [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
       -8     Specify an 8-bit data path.  This	causes an attempt to negotiate
	      the TELNET BINARY	option on both input and output.

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

       -F     forward a	forwardable copy of the	local credentials to  the  re-
	      mote system.

       -K     Specify no automatic login to the	remote system.

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

       -S tos Set the IP type-of-service (TOS) option for the  telnet  connec-
	      tion to the value	tos, which can be a numeric TOS	value (in dec-
	      imal, or a hex value preceded by 0x, or an octal value  preceded
	      by  a  leading 0)	or, on systems that support it,	a symbolic TOS
	      name found in the	/etc/iptos file.

       -X atype
	      Disable the atype	type of	authentication.

       -a     Attempt automatic	login.	This sends the user name via the  USER
	      variable	of the ENVIRON option, if supported by the remote sys-
	      tem.  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     Disable the reading of the user's	.telnetrc file.	 (See the tog-
	      gle skiprc command on this man page.)

       -d     Set the initial value of the debug flag to TRUE

       -e escape char
	      Set  the initial telnet escape character to escape char.	If es-
	      cape char	is omitted, then there will be no escape character.

       -f     forward a	copy of	the local credentials to the remote system.

       -k realm
	      If Kerberos authentication is being used,	 request  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
	      If the remote system understands 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 command.

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

       -r     Specify 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.

       -x     Turn on encryption of the	data  stream.	When  this  option  is
	      turned on, telnet	will exit with an error	if authentication can-
	      not be negotiated	or if encryption cannot	be turned on.

       host   Indicates	the name, alias, or Internet  address  of  the	remote
	      host.

       port   Indicates	 a  port  number  (address of an application).	If the
	      port is not specified, the default telnet	port (23) is used.

       When in rlogin mode, ~ is the telnet escape character; a	 line  of  the
       form ~. disconnects from	the remote host.  Similarly, the line ~^Z sus-
       pends 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
       system,	under the control of the remote	system.	 When input editing or
       character echoing is to be disabled, the	remote system will relay  that
       information.   The remote system	will also relay	changes	to any special
       characters that happen on the remote system, so that they can take  ef-
       fect 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	 (nor-
       mally)  only  completed lines are sent to the remote host.  The ``local
       echo character''	(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	flag  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 pro-
       tocol sequences to the remote side.  If LINEMODE	has ever been enabled,
       then the	user's susp and	eof are	 also  sent  as	 TELNET	 protocol  se-
       quences,	 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 acknowledges	the TELNET sequence) and flush previous	termi-
       nal 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
       command mode, the normal	terminal editing conventions are available.

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

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

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

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

	      status Lists the current status of the various types of  authen-
		     tication.

       close  Close a TELNET session and return	to command mode.

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

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

       Note:  Because of export	controls, the TELNET  ENCRYPT  option  is  not
       supported outside of the	United States and Canada.

       Valid arguments for the encrypt command are as follows:

	      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 available types, use the encrypt dis-
		     able ?  command.

	      enable type]fP [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 command.

	      -input This is the same as the encrypt stop input	command.

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

	      -output
		     This is the same as the encrypt stop output command.

	      start [input|output]
		     Attempts to start encryption.  If you omit	input and out-
		     put, 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, encryp-
		     tion is on	both input and output.

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

       environ arguments ...
	      The environ command is used to manipulate	the the	variables that
	      my 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 variables.

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

	      unexport variable
		     Mark  the variable	variable to not	be exported unless ex-
		     plicitly asked for	by the remote side.

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

	      ?	     Prints out	help information for the environ command.

       logout Sends the	TELNET LOGOUT option to	the remote side.  This command
	      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 connection.  If
	      the remote side also supports the	concept	of suspending a	user's
	      session for later	reattachment, the  logout  argument  indicates
	      that you should terminate	the session immediately.

       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 en-
	      tering 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 en-
		     abled.

	      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 command.

       open host [-a] [[-l] user] [-port]
	      Open a connection	to the named host.  If no port number is spec-
	      ified, telnet will attempt to contact a TELNET server at the de-
	      fault port.  The host specification may be either	 a  host  name
	      (see  hosts(5) or	an Internet address specified in the ``dot no-
	      tation'' (see inet(3).  After  establishing  a  connection,  the
	      file  .telnetrc  in  the user's 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.  The rest of the line, and succes-
	      sive 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.

	      -a     Attempt automatic login.  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.

	      [-l] user
		     may  be used to specify the user name to be passed	to the
		     remote system via the ENVIRON option.

	      -port  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.

       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 re-
		     mote 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 charac-
		     ter entered.

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

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

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

	      escape Sends the current 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  currently
		     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 variables
	      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	 vari-
	      ables  may  be interrogated with the display command.  The vari-
	      ables which may be set or	unset, but  not	 toggled,  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 echo-
		     ing 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 charac-
		     ter 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 character.

	      erase  If	telnet is in 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 character 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 character is taken
		     to	be the terminal's flush	character.

	      forw1

	      forw2  If	telnet is operating in LINEMODE, these are the charac-
		     ters that,	when typed, cause partial  lines  to  be  for-
		     warded  to	 the remote system.  The initial value for the
		     forwarding	characters are taken from the  terminal'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 character 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 ter-
		     minal'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  se-
		     quence  (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  ter-
		     minal's reprint character.	 The initial value for the re-
		     print character is	taken to  be  the  terminal's  reprint
		     character.

	      rlogin This  is the rlogin escape	character.  If set, the	normal
		     TELNET escape character is	ignored	unless it is  preceded
		     by	this character at the beginning	of a line.  This char-
		     acter, 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 en-
		     abled, then this character	is taken to be the  terminal's
		     start  character.	The initial value for the kill charac-
		     ter is taken to be	the terminal's start character.

	      stop   If	the TELNET TOGGLE-FLOW-CONTROL	option	has  been  en-
		     abled,  then this character is taken to be	the terminal's
		     stop character.  The initial value	for the	kill character
		     is	taken to be the	terminal's stop	character.

	      susp   If	 telnet	is in localchars mode, or LINEMODE is enabled,
		     and the suspend character is typed,  a  TELNET  SUSP  se-
		     quence  (see send susp above) is sent to the remote host.
		     The initial value for the suspend character 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 ter-
		     minal'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.

       slc state
	      The slc command (Set Local Characters) is	used to	set or	change
	      the state	of the 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 special char-
		     acters.  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 characters.
		     The local default characters are those of the local  ter-
		     minal 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	estab-
		     lished.

	      ?	     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 argu-
	      ments are:

	      authdebug
		     Turns on debugging	 information  for  the	authentication
		     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 (autode-
		     crypt) command states that	encryption of the output  (in-
		     put) stream should	be enabled as soon as possible.

	      Note:   Because of export	controls, the TELNET ENCRYPT option is
	      not supported outside the	United States and Canada.

	      autologin
		     If	the remote side	supports the TELNET AUTHENTICATION op-
		     tion  telnet  attempts to use it to perform automatic au-
		     thentication.  If the AUTHENTICATION option is  not  sup-
		     ported,  the user's login name are	propagated through the
		     TELNET ENVIRON option.  This command is the same as spec-
		     ifying the	-a option on the open command.

	      autosynch
		     If	 autosynch and localchars are both TRUE, then when ei-
		     ther 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 carriage	 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 encryption code.

	      localchars
		     If	this is	TRUE , then the	flush, interrupt, quit,	erase,
		     and  kill	characters  (see set above) are	recognized lo-
		     cally, and	transformed into (hopefully) appropriate  TEL-
		     NET  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 as-
		     sumed to always be	TRUE.  If LINEMODE has ever  been  en-
		     abled,  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 protocol pro-
		     cessing (having to	do with	TELNET options).  The  initial
		     value for this flag is FALSE .

	      prettydump
		     When  the	netdata	 flag is enabled, if prettydump	is en-
		     abled the output from the netdata command will be format-
		     ted  in  a	more user-readable format.  Spaces are put be-
		     tween 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 flag is TRUE, TELNET skips	the reading of
		     the .telnetrc file	in the user's home directory when con-
		     nections are opened.  The initial value for this flag  is
		     FALSE.

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

	      verbose_encrypt
		     When the verbose_encrypt flag is TRUE, TELNET prints  out
		     a	message	 each  time encryption is enabled or disabled.
		     The initial value for this	toggle is FALSE.   Note:   Be-
		     cause  of	export	controls,  data	encryption is not sup-
		     ported outside of the United States and Canada.

	      ?	     Displays the legal	toggle commands.

       z      Suspend telnet.  This command only works when the	 user's	 shell
	      is 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, prints a help summary.  If a  com-
	      mand is specified, will print the	help information for just that
	      command.

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

FILES
       ~/.telnetrc  user-customized telnet startup values
       ~/.k5login   (on	remote host) -	file  containing  Kerberos  principals
		    that are allowed access.

HISTORY
       The Telnet command appeared in 4.2BSD.

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.

								     TELNET(1)

NAME | SYNOPSIS | DESCRIPTION | OPTIONS | ENVIRONMENT | FILES | HISTORY | NOTES

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