Very Computer

I am looking for a  way to limit the number of logins a user can have
simultaneously.

For instance, user x is a schmuck and I only want him to be able to have one
session. User y is ok, so 1-5 sessions. User z is cool so no limits.

Anyone know how to do this?

Andrew

Quote:>[ `who | grep username | wc -l` -gt X ] && {
> echo "You logged in too many times - loser"
> sleep 5
> exit
>}

>Where X is the number of times you want them to be able to log in.

How do I make an IF statement such that it only fires when the user has
logged in more times than specified?

Even better, can I make 1 script for everyone and have it look to a file in
their home directory for the settings. That way I can have a default file in
/etc/skel and change the people manually that I want to change.

This would involve a variable in the script that would find the current
users account, see how many times they pop up in w, and then compare that
number to the . file.

I am going to*around with it some more, thanks. Any more tips are
always appreciated... :)

Andrew

This is a handy solution BUT I would suggest putting this loop into
/etc/profile ... which is only write-able by root.

If you put this into 'skel' and from there into ~/.profile then the
user can just edit it out on their own after they log in the first
time.

The variable number of simultaneous logins allowed is a little more
difficult UNLESS you base it on the "User Group" ID ... that is put
the users into groups based on their value to the system and have the
/etc/profile script check the GID of the user and assign a value based
on what it finds.

Good luck ... interesting puzzle.

--
+---------------------------------------------------------+
 Never underestimate one's capabilities else you have
            already lost the edge in the battle to come.
   Website: http://hornetsnestusa.home.ml.org/

+---------------------------------------------------------+

Is this true?

On my Slackware system it doesn't appear to work like this ... I put
the default prompt and path in /etc/profile then for one login I use a
different prompt (due to using it to log into an Apple system) defined
in ~/.profile BUT the path data remains the same.

This could take some additional experimentation to find out.

Regards

mark

P.S. The reason I suggested putting the code in .profile was because the
original poster wanted different number of logins for different and users.  If
however a central file was created that contained lines of the format userame:X
(X being maximum logins) it would be possible to put the following in
/etc/profile.  This is just off the top of my head so don't blame me if it's
*:)

LOGINLINE=`grep "userame:" /etc/centralfile`
[ `who | grep username | wc -l` -gt `expr $LOGINLINE : ".*:\(.*\)"` ] && {
        echo "Logged in too many times - Loser"
        exit 1

Quote:}

mark

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