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- From: sherwood@fenris.space.ualberta.ca (Sherwood Botsford)
- Newsgroups: comp.sys.next.sysadmin
- Subject: Re: LogoutHook question
- Message-ID: <1992Aug27.180142.15181@kakwa.ucs.ualberta.ca>
- Date: 27 Aug 92 18:01:42 GMT
- References: <1992Aug25.144803.7160@tssnext.rmNUG.ORG>
- Sender: news@kakwa.ucs.ualberta.ca
- Organization: University Of Alberta, Edmonton Canada
- Lines: 102
- Nntp-Posting-Host: fenris.space.ualberta.ca
-
- > lemson@ux1.cso.uiuc.edu (David Lemson) writes:
- > : I know that if a LoginHook exits with a 0, the login
- proceeds
- > : normally. If it exits with a 1, then the login kicks
- back out to
- > : the prompt.
- > : I want to do the same sort of thing with LogoutHook.
- If I exit the
- > : LogoutHook program with a 1, I want it to dump the user
- back into
- > : the workspace, not letting them log out. I tried it,
- and it doesn't
- > : work. Anyone have any idea how I might do this?
- (something
- > : undocumented?)
- > : BTW, in case you're wondering why I don't want to let
- the user log
- > : out, it's because I want to force them to go back and
- reduce their
- > : disk usage before they log out.
- > : --
-
-
- I assume that you have looked at Quotas.tar.Z
-
- Ok, other thoughts.
-
- I have a script, called CleanScratch that checks the atime
- flags for all the files on the Scratch disk. Any that
- haven't been accessed in 9 days results in mail. After 11
- days they are removed.
-
- This action is drastic, but for the Scratch disk (which is
- public writable, and never backed up, ) is suitable.
-
- For your situation, you could work like this:
-
- any directory that hasn't had a file accessed for n days is
- zipped.
-
- If a zipped file is not accessed for M days, a request goes
- to the user to move it to tape.
-
- Another idea:
- All users are normally members of group GoodUsers
- Each night run quot on the user file systems. For
- those users above n Megs, remove them from membership of
- GoodUsers.
- Now go through an make most of the apps owned by
- GoodUsers and take off the execute by other bit. (You
- could even take it off the directory. This would result in
- most of their dock being question marks.
- Mail is left functional.
- They are sent mail explaining the problem, along
- with the output of du on their files.
-
- I think you could modify Quotas to work with this,
- so that when they got within 20% of quota max they would
- get a warning, and when the quota was exceeded, instead of
- being locked out, they just could access the workspace and
- Mail and Stuart.
-
- Yet another idea.
- Since Quotas keeps track of how much users have
- been using, you could institute billing.
- An account costs $25/Semester. Your account is
- debited 2 cents per Megabyte-day, and 5 cents per copy
- printed. No charge for actual console use.
- (This generates $7/meg/year which would more than
- pay for a new disk even if you sold only half the space)
- LoginHook tells users what their current status is.
-
- To make administration easy, additional funds are
- purchased only in fixed units (Say $10 bucks)
-
- If you have a hoard of such users, what I'd do is
- print up cards with an encrypted string on it. Write a
- program called AddAccount that is called by LoginHook when
- the users account is overdrawn. The panel for AddAccount
- floats on top of everything, and covers the entire screen.
- On this window it gives the current account info. It has a
- single window for the user to punch in the encrypted
- string. When the string is entered, the users account is
- updated. AddAccount asks if the user wants to log in any
- more funds. The user can log in as many strings as he has.
-
- Each string is unique, and is used only once. You
- need a protected database for that.
-
- Now you print up a bunch of cards with these
- strings on them, put them in non-see through envelopes (Or
- have the mainframe print them on the same kind of stomp
- through envelope they use for sending out grade
- information.)
-
- The bookstore sells these things.
-
- Beauty of this:
- You don't have to have a staff person who has to
- take peoples money. You don't have to have an operator to
- punch the things in. Money is collected by the bookstore
- who is good at that. Entry is done by the user himself.
-