 For example, the weather map display system at the Department of Geography/Geology at the University of Nebraska at Omaha has been in continuous operation since 1999.Consisting of six Apple Macintosh computers, some dating to 1992 and with as little as 32 MB of memory, the system uses Cron and Applescript to perform certain operations every hour.Files that are downloaded include GIF or JPEG images that display current weather conditions, including NEXRAD radar, lightning strikes, weather warnings and watches.