TIP(1c,C) AIX Commands Reference TIP(1c,C)
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tip
PURPOSE
Connects to a remote system.
SYNTAX
+------+ +----------+
tip ---| |---| |--- system-name ---|
+- -v -+ +- -speed -+
+------+ +----------+
tip ---| |---| |--- phone-number ---|
+- -v -+ +- -speed -+
Note: This command does not have MBCS support.
DESCRIPTION
The tip command establishes a full-duplex connection to another machine.
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 returns you to tip).
~> Copy file from local to remote. The tip command prompts
for the name of a local file to transmit.
~< Copy file from remote to local. The tip command 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.
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~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 the tip command (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
The tip command 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 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 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 (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 interrupt aborts the dialogue and returns
you to the remote machine.
The tip command 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.
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,
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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 prints 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
The tip command 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 and mail. 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.
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-tranmission during a
~< file transfer command; abbreviated eofr.
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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 recognizes
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 /et/en/ef/eb.
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.
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 receipt of this character.
raise
(bool) Uppercase mapping mode; abbreviated ra; default value is off. When
this mode is enabled, all lowercase letters are 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 records everything transmitted by the remote machine in the
script record file specified in record. If the beautify switch is on, only
printable ASCII characters are included in the script file (those
characters between 040 and 0177). The variable exceptions is used to
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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.
$HOME/.tiprc Initialization file.
Lock file to avoid conflicts with uucp.
RELATED INFORMATION
See the following commands: "cu" and "connect."
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