Major changes:
- don't use deprecated ntpdate but sntp client
- don't update sys time from ntp, just compare offsets
- now hwclock is the only command which needs root permissions
- resolve ntp server to one fixed IP to get comparable offsets
always from the same remote machine
- don't enter the systohc/hctosys loop if not even --show works
- verbose but not too ugly debug output
Note, maybe later the resolve_host function could be moved to functions.sh
because other tests (e.g. last) should check whether dns is available.
Signed-off-by: Ruediger Meier <ruediger.meier@ga-group.nl>
Use ts_check_prog for mdadm, readelf, file, ntpdate, bc (mdadm was
not always checked so far).
There are some positive side-effects. We are using always $PATH now
instead of randomly hardcoded /usr/bin, /sbin, etc. If we ever want
to change this again, we should do this generically in ts_init.
Signed-off-by: Ruediger Meier <ruediger.meier@ga-group.nl>
