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TIP(1C)								       TIP(1C)

NAME
       tip, cu - connect to a remote system

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

DESCRIPTION
       Tip  and	 cu  establish	a  full-duplex	connection to another machine,
       giving the appearance of being logged in directly on  the  remote  cpu.
       It  goes	 without  saying that you must have a login on the machine (or
       equivalent) to which you wish to connect.  The preferred	 interface  is
       tip.   The  cu  interface  is included for those people attached to the
       ``call UNIX'' command of version 7.  This manual	 page  describes  only
       tip.

       Typed  characters  are  normally	 transmitted  directly	to  the remote
       machine (which does the echoing as well).  A tilde (`~')	 appearing  as
       the  first  character  of a line is an escape signal; the following are
       recognized:

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

       ~c  [name]
		 Change	 directory to name (no argument implies change to your
		 home directory).

       ~!	 Escape to a shell (exiting the shell will return you to tip).

       ~>	 Copy file from local to remote.  Tip prompts for the name  of
		 a local file to transmit.

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

       ~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 tip sends it the ``from'' file.	 If the ``to''
		 file isn't specified the ``from'' file name  is  used.	  This
		 command  is  actually	a  UNIX specific version of the ``~>''
		 command.

       ~t from [ to ]
		 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 tip.

       ~|	 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 shell.

       ~$	 Pipe the output from a local UNIX process to the remote host.
		 The command string sent to the local UNIX system is processed
		 by the shell.

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

       ~s	 Set a variable (see the discussion below).

       ~^Z	 Stop tip (only available with job control).

       ~^Y	 Stop  only the ``local side'' of tip (only available with job
		 control); the ``remote side'' of tip, the side that  displays
		 output from the remote host, is left running.

       ~?	 Get a summary of the tilde escapes

       Tip  uses the file /etc/remote to find how to reach a particular system
       and to find out how it should operate  while  talking  to  the  system;
       refer  to  remote(5) 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, e.g. ``tip -300 mds''.

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

       When tip prompts for an argument (e.g. 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 machine.

       Tip  guards  against  multiple  users  connecting to a remote system by
       opening modems  and  terminal  lines  with  exclusive  access,  and  by
       honoring the locking protocol used by uucp(1C).

       During  file  transfers	tip  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	 tip  should synchronize with the remote system on the echo of
       each transmitted character.

       When tip must dial a phone number to connect to a system it will	 print
       various messages indicating its actions.

       VARIABLES

       Tip  maintains a set of variables which control its operation.  Some of
       these variable 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  vi(1)  and
       mail(1).	  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
       concatenating  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 tip to display
       the  sets  as  they  are	  made.	   Certain   common   variables	  have
       abbreviations.	The  following	is  a  list of common variables, their
       abbreviations, and their default values.

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

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

       chardelay
	      (num) The character delay (in seconds) for a file transfer to  a
	      remote  host;  abbreviated  cdelay.   The	 default  value	 is  0
	      seconds.

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

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

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

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

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

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

       exceptions
	      (str) The set of characters which should not be discarded due to
	      the  beautification  switch;  abbreviated	 ex;  default value is
	      ``\t\n\f\b''.

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

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

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

       parity
	      (str)  the  parity  to  be generated during the connection.  The
	      default value is none.  Other values are	odd,  even,  zero  and
	      one.

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

       raise
	      (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  tip	for transmission to the remote
	      machine.

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

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

       script
	      (bool) Session scripting mode; abbreviated sc; default  is  off.
	      When  script  is true, tip will record everything transmitted by
	      the remote machine  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.

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

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

       SHELL
	      (str)  The  name of the shell to use for the ~! command; default
	      value is ``/bin/sh'', or taken from the environment.

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

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

DIAGNOSTICS
       Diagnostics are, hopefully, self explanatory.

SEE ALSO
       remote(5), phones(5)

BUGS
       The  full  set  of  variables  is undocumented and should, probably, be
       paired down.

4th Berkeley Distribution	  May 5, 1986			       TIP(1C)
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