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tip(1c)								       tip(1c)

       tip, cu - connect to a remote system

       tip [-v] [-speed] system-name
       tip [-v] [-speed] phone-number
       cu phone-number [-t] [-s speed] [-a acu] [-l line] [-#]

       The  and commands establish a full-duplex connection to another system,
       giving the appearance of being logged in directly on  the  remote  cpu.
       Modems  must  be present on your system and configured into the file in
       order for and to work.  See for	information  on	 how  to  set  up  the

       You  must  have an account on the system (or equivalent) into which you
       wish to log in.	The preferred interface is The interface  is  included
       for  those  people  attached to the ``call UNIX'' command of version 7.
       This manual page describes only

       -# Uses specified speed (#) as baud rate.

       -l Uses specified terminal line.

       -v Displays all variable settings.

       Typed characters are normally transmitted directly to the  remote  sys‐
       tem,  which  does  the  echoing as well.	 A tilde (~') appearing as the
       first character of a line is an escape signal.  The tilde escapes are:

	  Drop the connection and exit (you may still  be  logged  in  on  the
	  remote machine).

	c  [name]
	  Change  directory  to name (no argument causes a change to your home

	! Escape to a shell (exiting the shell returns you to ).

	> Copy file from local to remote.  The command prompts for the name of
	  a local file to transmit.

	< Copy	file  from remote to local.  The command prompts first for the
	  name of the file to be sent, then for a command to  be  executed  on
	  the remote system.

	p  from [ to ]
	  Send	a  file	 to  a	remote	UNIX host.  The put command causes the
	  remote UNIX system to run the command string: cat > to, while	 sends
	  it  the  from	 file.	 If the to file is not specified the from file
	  name is used.	 This command is actually a UNIX specific  version  of
	  the ~> command.

	t Take	a  file from a remote UNIX host.  As in the put command the to
	  file defaults to the from file name  if  it  isn't  specified.   The
	  remote  host	executes the command string cat 'from';echo ^A to send
	  the file to

	| Pipe the output from a remote command to a local UNIX process.   The
	  command  string  sent	 to  the local UNIX system is processed by the

	# Send a BREAK to the remote system.  For systems which don't  support
	  the  necessary  call	the  break  is simulated by a sequence of line
	  speed changes and DEL characters.

	s Sets a variable.  See the discussion below.

	v Displays sets as they are made.

	  Stop (only available with job control).

	? Displays a summary of the tilde escapes

       The utility uses the file to find how to reach a particular system  and
       to  find	 out how it should operate while talking to the system.	 Refer
       to for a full description.  Each system has a default  baud  rate  with
       which  to  establish  a connection.  If this value is not suitable, the
       baud rate to be used may be specified on the command line, for example,
       tip -300 mds.

       When  establishes a connection it sends out a connection message to the
       remote system; the default value, if any, is defined in

       When prompts for an argument (for  example,  during  setup  of  a  file
       transfer) the line typed may be edited with the standard erase and kill
       characters.  A null line in response to a prompt, or an interrupt, will
       abort the dialogue and return you to the remote system.

       The command guards against multiple users connecting to a remote system
       by opening modems and terminal lines with exclusive access, and by hon‐
       oring the locking protocol used by

       During  file  transfers provides a running count of the number of lines
       transferred.  When using the  ~>	 and  ~<  commands,  the  eofread  and
       eofwrite	 variables are used to recognize end-of-file when reading, and
       specify end-of-file when writing (see below).  File transfers  normally
       depend  on tandem mode for flow control.	 If the remote system does not
       support tandem mode, echocheck may be set to indicate  should  synchro‐
       nize with the remote system on the echo of each transmitted character.

       When must dial a phone number to connect to a system it will print var‐
       ious messages indicating its actions.  The command supports two methods
       of dialing modems.  Tailored subroutines built into support the DIGITAL
       DN-11, DF02, DF03, DF112, DF124, and DF224 modems, the Racal-Vadic  831
       auto-call modem, the Ventel 212+ modem, Racal-Vadic 3451 modem, and the
       Bizcomp 1031 and 1032 integral call unit/modems.

       A generic dialer interface provides an alternative method  to  tailored
       subroutines  for	 each  type of modem.  The generic method uses entries
       similar to to provide with the  information  needed  to	activate  some
       modem and place a call.	The file used by the generic dialer is and the
       format of entries in this file are described in

       Note that the generic dialer interface is used whenever	the  AT	 field
       from  an	 entry of matches the name field of an entry of If no match is
       found, then the tailored subroutine list is searched and will  be  used
       if that modem is supported there.

       When  using  a  DIGITAL	DF112 modem, disable the ``Interface Test Mode
       Indicate'' option (set switchpack2, switch 6 to the OFF position)..

       VARIABLES The command maintains a set of variables  which  control  its
       operation.  Some of these variables are read-only to normal users (root
       is allowed to change anything of interest).  Variables may be displayed
       and  set	 through  the s escape.	 The syntax for variables is patterned
       after and Supplying all as an argument to the set command displays  all
       variables  readable  by	the user.  Alternatively, the user may request
       display of a particular variable by attaching a	?  to  the  end.   For
       example escape?	displays the current escape character.

       Variables  are  numeric, string, character, or boolean values.  Boolean
       variables are set merely by specifying their name; they may be reset by
       prepending  a  ! to the name.  Other variable types are set by concate‐
       nating an = and the value.  The entire assignment  must	not  have  any
       blanks  in it.  A single set command may be used to interrogate as well
       as set a number of variables.  Variables may be initialized at run time
       by  placing  set	 commands  (without  the ~s prefix in a file .tiprc in
       one's home directory).  The -v option causes to	display	 the  sets  as
       they  are made.	Certain common variables have abbreviations.  The fol‐
       lowing is a list of common variables, their  abbreviations,  and	 their
       default values.

	      (bool)  Discard  unprintable  characters when a session is being
	      scripted; abbreviated be.

	      (num) The baud rate at which  the	 connection  was  established;
	      abbreviated ba.

	      (num) When dialing a phone number, the time (in seconds) to wait
	      for a connection to be established; abbreviated dial.

	      (bool) Synchronize with the remote host during file transfer  by
	      waiting  for the echo of the last character transmitted; default
	      is off.

	      (str) The set of characters which signify an end-of-transmission
	      during a ~< file transfer command; abbreviated eofr.

	      (str)  The  string sent to indicate end-of-transmission during a
	      ~> file transfer command; abbreviated eofw.

	      (str) The set of characters which indicate an end-of-line.   The
	      command  will  recognize escape characters only after an end-of-

	      (char) The command prefix (escape)  character;  abbreviated  es;
	      default value is ~.

	      (str) The set of characters which should not be discarded due to
	      the beautification switch;  abbreviated  ex;  default  value  is

	      (char)  The  character  used to force literal data transmission;
	      abbreviated fo; default value is ^P.

	      (num) The amount of data (in bytes) to buffer between file  sys‐
	      tem writes when receiving files; abbreviated fr.

	      (str)  The name of the host to which you are connected; abbrevi‐
	      ated ho.

	      (char) The character  which  indicates  an  end-of-line  on  the
	      remote  host;  abbreviated  pr; default value is 0 This value is
	      used to synchronize during what data transfers.	The  count  of
	      lines  transferred  during  a  file transfer command is based on
	      receipt of this character.

	      (bool) Upper case mapping mode; abbreviated ra; default value is
	      off.   When this mode is enabled, all lower case letters will be
	      mapped to upper case by for transmission to the remote system.

	      (char) The input character used to  toggle  upper	 case  mapping
	      mode; abbreviated rc; default value is ^A.

	      (str)  The  name	of  the	 file  in  which  a  session script is
	      recorded; abbreviated rec; default value is tip.record.

	      (bool) Session scripting mode; abbreviated sc; default  is  off.
	      When  script  is true, will record everything transmitted by the
	      remote system in the script record file specified in record.  If
	      the  beautify switch is on, only printable ASCII characters will
	      be included in the script file (those characters between 040 and
	      0177).   The  variable exceptions is used to indicate characters
	      which are an exception to the normal beautification rules.

	      (bool) Expand tabs to spaces during file transfers;  abbreviated
	      tab; default value is false.  Each tab is expanded to 8 spaces.

	      (bool)  Verbose  mode;  abbreviated verb; default is true.  When
	      verbose mode is enabled, prints messages	while  dialing,	 shows
	      the  current  number of lines transferred during a file transfer
	      operations, and more.

	      (str) The name of the shell to use for the ~!  command;  default
	      value is /bin/sh.

	      (str)  The  home	directory  to  use for the ~c command; default
	      value is taken from the environment.

       Diagnostics are self-explanatory.

       /etc/remote		global system descriptions
       /etc/phones		global phone number data base
       /etc/acucap		shared autodial modem database
       ${REMOTE}		private system descriptions
       ${PHONES}		private phone numbers
       ~/.tiprc			initialization file.
       /usr/spool/uucp/LCK..*	lock file to avoid conflicts with uucp

See Also
       acucap(5), phones(5), remote(5), uucpsetup(8)


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