tldr/pages/linux/hwclock.md

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# hwclock
> Read or change the hardware clock. Usually requires root.
> More information: <https://manned.org/hwclock>.
- Display the current time as reported by the hardware clock:
`hwclock`
- Write the current software clock time to the hardware clock (sometimes used during system setup):
`hwclock --systohc`
- Write the current hardware clock time to the software clock:
`hwclock --hctosys`