terminal control database file
The ttys file (/etc/auth/system/ttys)
contains entries for each terminal that can be used to log in
to the system. Authentication programs use this database to determine if
logging in is permitted on a particular terminal.
Changes to this file are normally made by using
the Terminal Manager.
The following keyword identifiers are supported:
This field defines the terminal device filename
for the entry (excluding the /dev pathname).
For example, if the terminal entry
describes the /dev/tty01 device, the
t_devname field should contain ``tty01''.
The number of consecutive unsuccessful login attempts to the terminal
This flag indicates whether the
terminal device has been locked or not. This field may be manipulated by
authorized administrators only.
The login delay enforced by authentication programs between
unsuccessful login attempts as a time_t value.
This slows the rate of penetration attempts on a terminal device.
The login timeout value in seconds. If a login attempt is initiated
by entering a user name at the login prompt
but successful authentication is not
completed within the timeout interval
specified, the login attempt will be aborted.
The last successful login time to the terminal device as a
The maximum number of consecutive unsuccessful login attempts
permitted using the terminal before it is locked. Once the terminal is
locked, it must be unlocked by an authorized administrator.
The system time of last logout associated with this terminal
device as a time_t value.
The user ID of the last user to log out from the system using the
The user name of the last user to successfully log in using the terminal
The last unsuccessful login time to the terminal device as a
The user name of the last user to unsuccessfully attempt to log in using
the terminal device.
The following is an example of a terminal control database
This entry is for the device /dev/tty01. The most recent
successful login session was for the user georgep. The most
recent unsuccessful login attempt was by the user ianw.
Prior to the most recent successful login session, user
steve was logged in. The entry records the system times for
the current successful login, the end of the previous
successful login session, and the most recent
unsuccessful login attempt. This terminal is shown as not being locked.
terminal control database
ttys is not part of any currently supported standard;
it is an extension of AT&T System V provided by
The Santa Cruz Operation, Inc.
© 2003 Caldera International, Inc. All rights reserved.
SCO OpenServer Release 5.0.7 -- 11 February 2003