Real Time Clock
Get current time (system and hardware)⚓︎
On modern distributions, timedatectl can be used to get detailed time and date information.
The Linux system time is synchronized with the internal real time clock at boot time.
timedatectl is missing, system and time can be read out using the
Set system time⚓︎
On our default images we try to synchronize time from
pool.ntp.org on an ifup networking event. If we succeed with the
ntpdate command we synchronize the system time to hardware clock (main CPU internal real time clock).
/etc/default/ntpdate on target system.
Set hardware clock to system time⚓︎
Set system time to hardware clock⚓︎
Set alarm (wake on RTC)⚓︎
The internal real time clock can be found at