NAME
ct — spawn getty to a remote terminal (call terminal)
SYNOPSIS
ct
[-w
n]
[-x
n]
[-h]
[-v]
[-s
speed]
telno...
DESCRIPTION
ct
dials
telno,
the telephone number of a modem
that is attached to a terminal, and spawns a
getty(1M)
process to that terminal.
ct
tries each line listed in file
/etc/uucp/Devices
until it finds an available line with appropriate attributes
or runs out of entries.
If no lines are free,
ct
asks whether it should wait for a line,
and if so, how many minutes it should wait before giving up.
ct
searches again for an available line
at one-minute intervals until the specified limit is exceeded.
Note that normally,
ct
disconnects the current tty line,
so that the line can answer the incoming call.
This is because
ct
assumes that the current tty line is connected to the terminal
to spawn the
getty
process.
The
telno
argument specifies the telephone number,
which can be composed of characters
0
through
9,
-,
=,
*,
and
#.
Use equal signs to signify secondary dial tones and minus
signs for delays at appropriate places.
The maximum length of
telno
is 31 characters.
If more than one telephone number is specified,
ct
tries each in succession until one answers;
this is useful for specifying alternate dialing paths.
When
ct
disconnects the current line,
getty
should not be spawned on this line if
ct
is going to make use of the same line to reconnect.
To do this, set the entry for this line in the
inittab
file to
uugetty
instead of
getty
(see
inittab(4)).
Options
ct
recognizes the following options and command-line arguments:
- -wn
Instruct
ct
to wait for a line a maximum of
n
number of minutes, if lines are busy.
If this option is specified,
ct
does not query the user about whether to wait for a line.
- -xn
Produce detailed output from program execution
on the standard error output.
This option is used for debugging.
The debugging level
n
is a single digit; the most useful value is
-x9.
- -h
Prevent
ct
from disconnecting ("hanging up") the current tty line.
This option is necessary if the user is using a different tty line
than the one used by
ct
to spawn the
getty.
- -v
Verbose mode.
The
-v
option is used with the
-h
option and causes
ct
to send a running narrative to the standard error output stream.
- -sspeed
Set the data rate where
speed
is expressed in baud.
The default rate is
1200.
After the user on the destination terminal logs out,
ct
prompts,
Reconnect?
If the response begins with the letter
n
the line is dropped.
Otherwise,
getty
is restarted and the
login:
prompt is printed.
Of course, the destination terminal must be attached to a modem
that can automatically answer incoming calls.
FILES
/var/adm/ctlog
/etc/uucp/Devices
Printable version
