adjtimexconfig − find kernel clock variables and save for


This script uses adjtimex(8) to find values for the kernel
variables tick and frequency that will make the system clock
approximately agree with the CMOS clock.  It then saves
these values in the configuration file /etc/default/adjtimex
so the settings will be restored on every boot, when
/etc/init.d/adjtimex, or systemd adjtimex.service, runs.
adjtimexconfig uses the drift rate recorded in /etc/adjtime
to adjust the times it reads from the CMOS clock.  If you
find the CMOS clock has a systematic drift, read the
clock(8) or hwclock(8) manual page, modify /etc/adjtime as
required, and run adjtimexconfig again.

Michael Meskes <>.