DESCRIPTIONexpirerm is a script that removes a list of files. The specified file lists the files to be removed. It is usually created by expire -z. This file is sorted, and then fed into a pipeline responsible for doing the removal, normally fastrm. (You may want to edit expirerm to change the flags passed to fastrm.)
If there seemed to be a problem removing the files, then a mail is sent to the news administrator. If there were no problems, then file is renamed to pathlog/expire.list where it is kept (for safety) until the next time expiration is done.