утилита времени (time clocks utility)
Описание (Description)
hwclock is an administration tool for the time clocks. It can:
display the Hardware Clock time; set the Hardware Clock to a
specified time; set the Hardware Clock from the System Clock; set
the System Clock from the Hardware Clock; compensate for Hardware
Clock drift; correct the System Clock timescale; set the kernel's
timezone, NTP timescale, and epoch (Alpha only); and predict
future Hardware Clock values based on its drift rate.
Since v2.26 important changes were made to the --hctosys function
and the --directisa option, and a new option --update-drift was
added. See their respective descriptions below.
