[K12OSN] is there an app or logfile that...

[Huck]

shows how long a user was logged on? Date/Time/Machinename

I'm looking for something to show that the K12LTSP machines are heavily 
used...
and would like some hard numbers to show the principal or boardmembers.

something like:


daveq  logged on at 13:00 sept 1 at ws100.ltsp
daveq logged out at 14:05 sept 1 at ws100.ltsp

something like that...

then I can see out of 40 machines what kind of load each machine has in 
terms of use by students
and how long they are spending on them


Thanks,

--Huck