/etc/rc.conf
- /etc/default/rc.confの該当部分を参照
ntpdate_enable="YES" # Run ntpdate to sync time on boot (or NO).
ntpdate_program="/usr/sbin/ntpdate" # path to ntpdate, if you want a different one.
ntpdate_flags="-b" # Flags to ntpdate (if enabled).
ntpd_enable="YES" # Run ntpd Network Time Protocol (or NO).
ntpd_program="/usr/sbin/ntpd" # path to ntpd, if you want a different one.
ntpd_sync_on_start="YES" # Sync time on ntpd startup, even if offset is high
ntpd_flags="-p /var/run/ntpd.pid -f /var/db/ntpd.drift" # Flags to ntpd (if enabled).