The Clock Mini-HOWTO
Ron Bean,
rbean@execpc.com
v2.1, November 2000
How to set and keep your computer's clock on time.
1. Introduction
- 1.1 Does Anybody Really Know What Time It Is?
- 1.2 Where to Find Stuff: "The Usual Places"
- 1.3 Acknowledgements
2. How Linux Keeps Track of Time
- 2.1 Basic Strategies
- 2.2 Potential Conflicts
- 2.3 Should the RTC use Local Time or UTC, and What About DST?
- 2.4 How Linux keeps Track of Time Zones
- 2.5 The Bottom Line
3. Software
- 3.1 Clock(8) and Hwclock(8)
- 3.2 Adjtimex(8)
- 3.3 Xntpd and ntpd: the Network Time Protocol
- 3.4 Chrony
- 3.5 Clockspeed
4. Radio Clocks
- 4.1 CHU and the "Gadget Box"
- 4.2 WWV and the "Most Accurate Clock"
- 4.3 GPS and the "Totally Accurate Clock"
- 4.4 Low-frequency Time Signals: DCF77, MSF(Rugby), WWVB
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