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== It's TIME ==
Network Time Protocol
Network Time Protocol Daemon
Also referred to as ntpd because it's a daemon.
There's a new system called [https://wiki.archlinux.org/index.php/Systemd-timesyncd systemd-timesyncd ] (is Is it default now on Ubuntu?), but ntpd is more accurate <ref>https://digitalbarbedwire.com/2015/05/16/debianubuntu-systemd-ntp-and-something-called-timesyncd/</ref> so it's better to stick with that. I guess some people are complaining that it's not as maintained? But if you have a system thatis RTOS. Timesyncd is a client-only implementation and may be more suitable for most installations. If you don's the caset know what time it is, then maintain ithow can you run [[cron]]?! Don't let your system get out of sync.
See
* http://doc.ntp.org/4.2.6/ntpd.html?advanced=on Docs
* https://help.ubuntu.com/lts/serverguide/NTP.html
* https://wiki.archlinux.org/index.php/Network_Time_Protocol_daemon
* https://www.digitalocean.com/community/tutorials/how-to-set-up-time-synchronization-on-ubuntu-16-04
* https://www.us-cert.gov/ncas/current-activity/2017/03/22/Vulnerabilities-Identified-Network-Time-Protocol-Daemon-ntpd
{{References}}
[[Category:System Administration]]