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RedHat 9 (Linux i386) - man page for telnet (redhat section 1)

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 remote 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  negoti-
	      ated on output.

       -S tos Set the IP type-of-service (TOS) option for the telnet connection to the value tos,
	      which can be a numeric TOS value (in decimal, 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 system.  The name used is that of the
	      current user as returned by getlogin(2) if it agrees with the current user ID; oth-
	      erwise it is the name associated with the user ID.

       -c     Disable  the  reading of the user's .telnetrc file.  (See the toggle 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 escape 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 cannot 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 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 ``char-
       acter 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 con-
       trol 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 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 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 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 ter-
       minal (until the remote host acknowledges 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 command mode, the normal terminal  edit-
       ing 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 command are as follows:

	      disable type
		     Disables the specified type of authentication.  To obtain a list  of  avail-
		     able 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 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  out-
		     put,  both  input	and  output  are disabled.  To obtain a list of available
		     types, use the encrypt disable ?  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 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 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 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 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	reattach-
	      ment,  the  logout argument indicates that you should terminate the session immedi-
	      ately.

       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  under-
		     stand the LINEMODE option, then enter ``character at a time'' mode.

	      line   Enable  the  TELNET  LINEMODE option, or, if the remote side does not under-
		     stand 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 command.

       open host [-a] [[-l] user] [-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) or an Internet address specified in  the  ``dot
	      notation''  (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 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.

	      -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 initia-
		     tion 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 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 character 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 sta-
		     tus.

	      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 termi-
		     nal).

	      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 variables
	      may be interrogated with the display command.  The variables 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 echoing of entered characters (for  normal  pro-
		     cessing),	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 character.

	      erase  If telnet is in mode (see toggle localchars below), and if telnet is operat-
		     ing 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 connected 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 characters that, when
		     typed, cause partial lines to be forwarded to the remote system.	The  ini-
		     tial  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 inter-
		     rupt 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 sys-
		     tem.  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 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  char-
		     acter.

	      rlogin This is the rlogin escape character.  If set, the normal TELNET escape char-
		     acter 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 charac-
		     ter is taken to be the terminal's start character.  The  initial  value  for
		     the kill character is taken to be the terminal's start character.

	      stop   If the TELNET TOGGLE-FLOW-CONTROL option has been enabled, then this charac-
		     ter 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 sequence (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 informa-
		     tion 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.

       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 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 characters.  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 TEL-
		     NET 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 authentication code.

	      autoflush
		     If autoflush and localchars are both TRUE , then when the ao, or quit  char-
		     acters  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  encryp-
		     tion  (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.

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

	      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 the -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 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  car-
		     riage return followed by a line feed.  This mode does not affect those char-
		     acters 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 charac-
		     ters (see set above) are recognized locally,  and	transformed  into  (hope-
		     fully)  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  ini-
		     tial value for this toggle is FALSE.

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

	      prettydump
		     When the netdata flag is enabled, if prettydump is enabled the  output  from
		     the  netdata command will be formatted in a more user-readable format.  Spa-
		     ces 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 flag is TRUE, TELNET skips the reading of the .telnetrc file
		     in the user's home directory when connections are opened.	The initial value
		     for this flag is FALSE.

	      termdata
		     Toggles  the display of all terminal data (in hexadecimal format).  The ini-
		     tial 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:  Because of export controls, data encryption is not	supported
		     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  command  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)


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