accounting system for disk space usage based on cost centres (as one configuration) e.g. manual system, binaries, libraries for certain software systems /usr/preserve and /tmp perhaps under individual users, but only if it is in the queue when the facility is already printing i.e. has not had accounting turned off on the printer server. Services such as mail spool, ftp, lpr, news, all under the service umbrella. students' home directories and project work under academic, lab (cur) staff home directories under lab service? Could include other departments if they wanted. Unaccounted If there is unaccounted, it should mail root and let him know what directories these are in case the secretaries might want to know. Mail list of unaccounted directories to root them a day or two in advance of the invoices happening. (timing configurable by user?) Also, mail a user if he has had stuff in the queue for a printer while accounting was on. Suggest he removes it to save disk space and re-queue it when the queue has died down. I will mail you again when there is not a backlog on that printer. Then mail them weekly while the printer is still busy, or until they tell you to stop. (again, frequency of mail can be configurable to user.) Then, after first histograms are dished out (say month 2) ... manual system - back online copies of formatted manual pages off to tape - if it is updated, it must have been replaced by a copy on another machine. You could allocate some hosts to be holders of unformatted copies. eg: eagle, raven and hobby. Will make service figures look smaller.