lk/basics/clock.md

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2020-01-02 00:04:35 +00:00
# Basics
Show system time:
> date
Show hardware time:
> sudo hwclock -r
Change system time to match hardware time:
> sudo hwclock --hctosys
Change hardware time to match system time:
> sudo hwclock --systohc
Manually set the hardware time to a specified date:
> sudo hwclock --set --date="8/25/19 13:30:00"
# Network Time Providers
Servers which take their time from an observatory we call Stratum 1 servers. Servers which takes their time from Stratum n servers are Stratum n+1 servers.
Install ntp with:
> sudo apt-get install -y ntp
The shell command for this is `ntpq`. Monitor the service providers using:
> ntpq -p