01-17-2011
1981 my school had a Perkin-Elmer running some UNIX flavour I don't remember today. There was a classroom with about twenty terminals and another room for doing homework with ten more. These ten terminals where ocupied almost around the clock. Only during the last two years of the Oberstufe (sort of sixth form) pupils were allowed to use the equippment. When we were too young for using the terminals officially we lurked around the elder students peeping their accounts and passwords. So the first thing I learned was not Pascal or C as intended by the curriculum but how to play "Star Trek" on the console. The second thing I learned was how to patch the code to rise energy and the number of photon torpedos to blast the Klingons without having to return to base... what an evil hacker I was
![Big Grin Smilie](https://www.unix.com/images/smilies/biggrin.gif)
Lost contact to Unix from about 1985 till 1993 when I got into contact with both Linux and AIX. Picked up a job in the IT in 1996 and sticked to AIX since. I still learn something new about AIX almost every week.
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LEARN ABOUT REDHAT
pam_console
pam_console(8) System Administrator's Manual pam_console(8)
NAME
pam_console - control permissions for users at the system console
SYNOPSIS
session optional /lib/security/pam_console.so
auth required /lib/security/pam_console.so
DESCRIPTION
pam_console.so is designed to give users at the physical console (virtual terminals and local xdm-managed X sessions by default, but that
is configurable) capabilities that they would not otherwise have, and to take those capabilities away when the are no longer logged in at
the console. It provides two main kinds of capabilities: file permissions and authentication.
When a user logs in at the console and no other user is currently logged in at the console, pam_console.so will change permissions and own-
ership of files as described in the file /etc/security/console.perms. That user may then log in on other terminals that are considered
part of the console, and as long as the user is still logged in at any one of those terminals, that user will own those devices. When the
user logs out of the last terminal, the console may be taken by the next user to log in. Other users who have logged in at the console
during the time that the first user was logged in will not be given ownership of the devices unless they log in on one of the terminals;
having done so on any one terminal, the next user will own those devices until he or she has logged out of every terminal that is part of
the physical console. Then the race can start for the next user. In practice, this is not a problem; the physical console is not gener-
ally in use by many people at the same time, and pam_console.so just tries to do the right thing in weird cases.
ARGUMENTS
debug turns on debugging
allow_nonroot_tty
gain console locks and change permissions even if the TTY's owner is not root.
permsfile=filename
tells pam_console.so to get its permissions database from a different file than /etc/security/console.perms
fstab=filename
tells pam_console.so to read the table of configured filesystems from a file other than /etc/fstab when scanning permsfile. This
file is used to map directories to device names.
FILES
/var/run/console.lock
/var/run/console/
/etc/security/console.apps
/etc/security/console.perms
SEE ALSO
console.perms(5)
console.apps(5)
/usr/doc/pam*/html/index.html pam_console_apply(8)
/usr/doc/pam*/html/index.html
BUGS
Let's hope not, but if you find any, please report them via the "Bug Track" link at http://bugzilla.redhat.com/bugzilla/
AUTHOR
Michael K. Johnson <johnsonm@redhat.com>
Red Hat 2000/7/11 pam_console(8)