NAME

uugetty − set terminal type, modes, speed, and line discipline

SYNOPSIS

/usr/lib/uucp/uugetty [−t timeout] [−r] line
[speed [type [linedisc] ] ]
/usr/lib/uucp/uugetty −c file

DESCRIPTION

uugetty is a standard getty(1M) modified to allow a tty line to be used by uucico, cu, and ct; that is, the line can be used in both directions.  The uugetty will allow users to login, but if the line is free, uucico, cu, or ct can use it for dialing out.  The implementation depends on the fact that uucico, cu, and ct create lock files when devices are used.  When the "open()" returns (or the first character is read when −r option is used), the status of the lock file indicates whether the line is being used by uucico, cu, ct, or someone trying to login.  Note that in the −r case, several <carriage-return> characters may be required before the login message is output.  The human users will be able to handle this slight inconvenience.  uucico trying to login will have to be told by using the following login script:

""  \r\d\r\d\r\d\r in:--in: ...

where the ... is whatever would normally be used for the login sequence.

If there is a uugetty on one end of a direct line, there must be a uugetty on the other end as well.  Here is an /etc/inittab entry using uugetty on an intelligent modem or direct line:

30:2:respawn:/usr/lib/uucp/uugetty −r −t 60 tty00 1200

The meanings of the available options are:

−t timeout
Specifies that uugetty should exit if the open on the line succeeds and there is no response to the login prompt in timeout seconds.  timeout is replaced by an integer. 

−r Causes uugetty to wait to read a character before it puts out the login message, thus preventing two uugettys from looping.  An entry for an intelligent modem or direct line that has a uugetty on each end must use this option. 

line Defines the name of the line to which uugetty will attach itself.  The line name will point to an entry in the /dev directory.  For example, /dev/tty00. 

speed Defines the entry to use from the /etc/gettydefs file.  The entry defines the line speed, the login message, the initial tty setting, and the next speed to try if the user says the speed is inappropriate (by sending a break character).  The default speed is 300. 

type Defines the type of terminal connected to the line.  The default terminal is none, representing a normal terminal unknown to the system. 

linedisc
Sets the line discipline to use on the line. The default is LDISC0, which is the only one currently compiled into the operating system. 

−c file
Checks the speed and tty definitions in file and sends the results to standard output.  Unrecognized modes and improperly constructed entries are reported.  For correct entries, flag values are printed.  file is replaced by /etc/gettydefs or a similarly structured file. 

FILES

/etc/gettydefs
/etc/issue

SEE ALSO

login(1), ct(1C), cu(1C), getty(1M), init(1M), uucico(1M), tty(7).  ioctl(2), gettydefs(4), inittab(4) in the INTER­ACTIVE SDS Guide and Programmer’s Reference Manual. 

BUGS

ct will not work when uugetty is used with an intelligent modem such as penril or ventel. 

\*U  —  Version 1.0