TIP(1spp) RISC/os Reference Manual TIP(1spp)
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 com-
mand causes the remote UNIX system to run the com-
mand string ``cat > 'to''', while tip sends it the
``from'' file. If the ``to'' file isn't speci-
fied, the ``from'' file name is used. This com-
mand is actually a UNIX specific version of the
``~>'' command.
~t from [ to ]
Take a file from a remote UNIX host. As in the put
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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).
~l Down load a program to a machine speaking the MIPS
serial line protocol. Tip prompts for the name of
the a.out format file to down load.
~^Z Stop tip (only available with job control).
~^Y Stop only the ``local side'' of tip (only avail-
able 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 partic-
ular 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 can 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 can be edited with the stan-
dard 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.
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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 ~< com-
mands, 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 sys-
tem does not support tandem mode, ``echocheck'' can be set
to indicate that tip should synchronize with the remote sys-
tem 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. Tip
supports the DEC DN-11 and Racal-Vadic 831 auto-call-units
the DEC DF02 and DF03; Ventel 212+; Racal-Vadic 3451; and
Bizcomp 1031 and 1032 integral call unit/modems.
VARIABLES
Tip maintains a set of variables which control its opera-
tion. Some of these variable are read-only to normal users
(root is allowed to change anything of interest). Variables
can be displayed and set through the ``s'' escape. The syn-
tax 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
can 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 can 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 can be used to interrogate as well
as set a number of variables. Variables can be initialized
at run time by placing set commands (without the ``~s'' pre-
fix 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.
append
(bool) If set, append script output to record file.
Otherwise, truncate record file when initiating script-
ing. Default is true.
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beautify
(bool) Discard unprintable characters when a session is
being scripted; abbreviated be.
baudrate
(num) The baud rate at which the connection was esta-
blished; abbreviated ba.
bits8
(bool) If set, transfer data in binary format for down
load command; otherwise, transfer data in 7 bit ASCII
format. Default is false.
dialtimeout
(num) When dialing a phone number, the time (in
seconds) to wait for a connection to be established;
abbreviated dial.
display
(bool) Display remote output when scripting is enabled.
Default is true.
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 an end-of-
tranmission during a ~< file transfer command; abbrevi-
ated 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; abbrevi-
ated es. Default value is `~'.
exceptions
(str) The set of characters which should not be dis-
carded due to the beautification switch; abbreviated
ex; default value is ``\t\n\f\b''.
force
(char) The character used to force literal data
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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.
prompt
(char) The character which indicates an 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 recipt of this char-
acter.
raise
(bool) Uppercase mapping mode; abbreviated ra. Default
value is off. When this mode is enabled, all lowercase
letters will be mapped to uppercase by tip for
transmission to the remote machine.
raisechar
(char) The input character used to toggle uppercase
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 every-
thing 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 nor-
mal 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
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true. When verbose mode is enabled, tip prints mes-
sages 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 prob-
ably be paired down.
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