Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10 5/3/83; site cbosgd.UUCP Path: utzoo!watmath!clyde!burl!ulysses!mhuxl!cbosgd!mark From: mark@cbosgd.UUCP (Mark Horton) Newsgroups: net.unix-wizards,net.bugs.usg Subject: Re: TZ Rationalization Requested Message-ID: <1081@cbosgd.UUCP> Date: Sat, 10-Mar-84 02:02:25 EST Article-I.D.: cbosgd.1081 Posted: Sat Mar 10 02:02:25 1984 Date-Received: Sat, 10-Mar-84 14:34:16 EST References: <341@dual.UUCP> Organization: AT&T Bell Laboratories, Columbus Lines: 11 An interesting side effect of the environment style method of determining the time zone is that, since any user can set his environment, it's easy to forge your time zone. What good does that do, you ask? Well, if your system has restrictions on what time of day certain programs (e.g. games) can be run, claiming to be in a funny time zone can get around them. (Although just chmodding /usr/games from crontab isn't subject to this.) If UUCP is only allowed to dial another system at certain times (presumably when the rates are lower), you can trick it into calling anyway. Finally, since you get to make up the name as well as offset of the time zone, you can use the real name and a fake offset, in order to, say, backdate mail you send.