macbookの時計が数秒ずれてていつまでもたってもなおらかったんだけど謎QAサイトのコマンドでなおった

16:22:16 tkrmbp:~% sudo sntp -sS pool.ntp.org
Password:
sntp 4.2.8p10@1.3728-o Tue Mar 21 14:36:42 UTC 2017 (136.200.1~4588)
kod_init_kod_db(): Cannot open KoD db file /var/db/ntp-kod: No such file or directory
2019-10-31 16:22:20.674264 (-0900) +2.506353 +/- 1.708850 pool.ntp.org 162.159.200.1 s3 no-leap
16:22:23 tkrmbp:~% sudo touch /var/db/ntp-kod
16:22:48 tkrmbp:~% sudo chmod 666 /var/db/ntp-kod
16:23:01 tkrmbp:~% sudo sntp -sS pool.ntp.org
sntp 4.2.8p10@1.3728-o Tue Mar 21 14:36:42 UTC 2017 (136.200.1~4588)
2019-10-31 16:23:04.279347 (-0900) +0.000932 +/- 0.038549 pool.ntp.org 162.159.200.1 s3 no-leap
16:23:04 tkrmbp:~%