$ Linux Command

System

hwclock

Read or set the hardware clock.

systemadmininspect

Additional Notes

hwclock is a system command used to read or set the hardware clock. It accesses the hardware clock (RTC) on the motherboard. Use --systohc to set the hardware clock from system time and --hctosys to set system time from the hardware clock.

Syntax

hwclock [options] [arguments]

Parameters

  • options: Flags that change how hwclock behaves.

Common Options

  • --help: Show command help when supported.
  • --version: Show version information when supported.

Examples

hwclock --help
man hwclock

Practical Notes

Options can vary by distribution and package version. Use man hwclock, hwclock --help, or the package documentation for exact syntax.