How Does Linux Keep Track of Time?
Contents Linux Asks the Hardware Clock Chip What Time It Is on Power up and Then Keeps Track of the Time Itself with Software. It Does This Using a Periodic...
Linux asks the Hardware Clock chip what time it is on power up and then keeps track of the time itself with software. It does this using a periodic interrupt from an accurate timer chip (not the Hardware Clock’s chip). It’s a bit like using a sundial and a digital egg timer to keep track of time.
How do I check my hardware clock in Linux?
Just type hwclock, which will display the date and time of your system’s hardware clock. This is the same date and time that you’ll see from the BIOS screen. You can also use option -r, or –show to display the date and time.
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What is hardware clock Linux?
hwclock also called Real Time Clock (RTC), is a utility for accessing the hardware clock. The hardware clock is independent of the OS(operating system) you use and works even when the machine is shut down. The hardware clock is also called a BIOS clock.
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