NAME

ct − spawn login to a remote terminal

SYNOPSIS

ct [options] telno . . . 

DESCRIPTION

ct dials the telephone number of a modem that is attached to a terminal and spawns a login process to that terminal.  Telno 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 through 9, −, =, ∗∗, and #.  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. 

ct tries each line listed in the file /etc/uucp/Devices until it finds an available line with appropriate attributes, or runs out of entries.  ct uses the following options:

−h Normally, ct hangs up the current line so it can be used to answer the incoming call.  The −h option prevents this action.  The −h option also waits for the termination of the specified ct process before returning control to the user’s terminal. 

−s speed The data rate may be set with the −s option.  speed is expressed in baud rates.  The default baud rate is 1200. 

−v If the −v (verbose) option is used, ct sends a running narrative to the standard error output stream. 

−w n If there are no free lines ct asks if it should wait for one, and if so, for how many minutes it should wait before it gives up.  ct continues to try to open the dialers at one-minute intervals until the specified limit is exceeded.  This dialogue may be overridden by specifying the −w n option where n is the maximum number of minutes that ct is to wait for a line. 

−xn This option is used for debugging; it produces a detailed output of the program execution on standard error.  n is a single number between 0 and 9.  As n increases to 9, more detailed debugging information is given. 

After the user on the destination terminal logs out, there are two things that could occur, depending on what type of port monitor is monitoring the port.  In the case of no port monitor, ct prompts: Reconnect? If the response begins with the letter n, the line is dropped; otherwise, ttymon is started again and the login: prompt is printed.  In the second case, where a port monitor is monitoring the port, the port monitor reissues the login: prompt. 

The user should log out properly before disconnecting. 

FILES

/etc/uucp/Devices
/var/adm/ctlog

SEE ALSO

cu(1C), login(1), uucp(1C), ttymon(1M). 

NOTES

The ct program will not work with a DATAKIT Multiplex interface. 

For a shared port, one used for both dial-in and dial-out, the ttymon program running on the line must have the −r and −b options specified [see ttymon(1M)]. 

  —  Basic Networking Utilities