clockadd
clockadd reads a TAI64NA time adjustment. It then adds
that adjustment
to the local UNIX clock.
The adjustment must be a single 16-byte packet.
clockadd must be run by root.
clockspeed(1), clockview(1), sntpclock(1), taiclock(1),
gettimeof-
day(2), settimeofday(2)
clock-
add(1)