The Clock Mini-HOWTO
Ron Bean,
rbean@execpc.com
v2, July 1999
How to set and keep your computer's clock on time.
1.
Introduction
2.
Basic Timekeeping under Linux
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
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
5.
Detailed instructions for clock(8)
5.1 Checking your installation
5.2 Measuring your clock's drift rate
5.3 Example