CT(1C) (Basic Networking Utilities) CT(1C)
NAME
ct - spawn getty to a remote terminal
SYNOPSIS
ct [ -wn ] [ -xn ] [ -h ] [ -v ] [ -sspeed ] telno ...
DESCRIPTION
ct dials the telephone number of a modem that is attached to
a terminal, and spawns a getty process to that terminal. The
telno argument is a telephone number, with equal signs for
secondary dial tones and minus signs for delays at
appropriate places. (The set of legal characters for telno
is 0 thru 9, -, =, *, and #. The maximum length telno is 31
characters). If more than one telephone number is
specified, ct will try each in succession until one answers;
this is useful for specifying alternate dialing paths.
ct will try each line listed in the file
/usr/lib/uucp/Devices until it finds an available line with
appropriate attributes or runs out of entries. If there are
no free lines, ct will ask if it should wait for one, and if
so, for how many minutes it should wait before it gives up.
ct will continue to try to open the dialers at one-minute
intervals until the specified limit is exceeded. The
dialogue may be overridden by specifying the -wn option,
where n is the maximum number of minutes that ct is to wait
for a line.
The -xn option is used for debugging; it produces a detailed
output of the program execution on stderr. The debugging
level, n, is a single digit; -x9 is the most useful value.
Normally, ct will hang up the current line, so the line can
answer the incoming call. The -h option will prevent this
action. The -h option will also wait for the termination of
the specified ct process before returning control to the
user's terminal. If the -v option is used, ct will send a
running narrative to the standard error output stream.
The data rate may be set with the -s option, where speed is
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CT(1C) (Basic Networking Utilities) CT(1C)
expressed in baud. The default rate is 1200.
After the user on the destination terminal logs out, there
are two things that could occur depending on what type of
getty is on the line (getty or uugetty). For the first
case, ct prompts, Reconnect? If the response begins with
the letter n, the line will be dropped; otherwise, getty
will be started again and the login: prompt will be printed.
In the second case, there is already a getty (uugetty) on
the line, so the login: message will appear.
To log out properly, the user must type ctrl-d.
Of course, the destination terminal must be attached to a
modem that can answer the telephone.
FILES
/usr/lib/uucp/Devices
/usr/adm/ctlog
/usr/spool/locks/LCK*
SEE ALSO
cu(1C), login(1), uucp(1C).
getty(1M), uugetty(1M) in the System Administrator's
Reference Manual.
BUGS
For a shared port, one used for both dial-in and dial-out,
the uugetty program running on the line must have the -r
option specified (see uugetty(1M)).
Page 2 May 1989