ADMIN - Explore the new world of system administration! Special introductory offer! Order by September 30th to save 10% off the regular subscription price! Each issue delivers technical solutions to the real-world problems you face every day. Learn the latest techniques for better:
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system management
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on Windows, Linux, Solaris, and popular varieties of Unix.
Networks often require very accurate timekeeping. The Network Time Protocol provides the time with precision.
Any cheap watch will keep better time than the chips in modern computers. There are tricks to improve precision – for example, you can ascertain the deviation and calculate a correcting vector – but you’ll never find a real alternative to using the proper tools. Computers often learn the time from extremely accurate reference clocks. There are many options. A DCF77 receiver connected to the serial or USB port allows a computer to receive the time from a reference clock (Figure 1).
Watch our free Video Archive from Apachecon US 2009. Archive provided by The Apache Foundation, COLLABNET, and Linux Pro Magazine
Drawing internationally renowned thought-leaders, contributors, and organizations in the Open Source community, ApacheCon offers insight into the culture and community that develops and shepherds industry-leading Open Source projects, including Apache HTTP Server – the world's most popular Web server software for more than 10 years.
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