This document is a WORK IN PROGRESS.
This is just a quick personal cheat sheet: treat its contents with caution!

`ntp`¶

The NTP Project provides a reference implementation of the NTP protocol and implementation documentation through a largely volunteer effort.

It is a common method to synchronize the software clock of a GNU/Linux system with internet time servers. It is designed to mitigate the effects of variable network latency and can usually maintain time to within tens of milliseconds over the public Internet. The accuracy on local area networks is even better, up to one millisecond.

Reference(s)

Install¶

apkaptdnfemergenixpacmanyumxbpszypper

# apt add ntp

# apt install ntp

# dnf install ntp

# emerge -a sys-process/ntp

on NixOSon non-NixOS

# nix-env -iA nixos.ntp

# nix-env -iA nixpkgs.ntp

# pacman -S ntp

For Artix users

If using dinit:
```
# pacman -S ntp ntp-dinit
```
If using openrc:
```
# pacman -S ntp ntp-openrc
```
If using runit:
```
# pacman -S ntp ntp-runit
```
If using s6:
```
# pacman -S docker ntp-s6
```

# yum install ntp

# xbps-install -S ntp

# zypper install ntp

Config¶

OpenRCRunitSysVinitSystemD

# rc-update add ntp default
# rc-service ntp start

Depending on your runit implementation, either run:

# ln -s /etc/runit/sv/ntpd /service

or run:

# ln -s /etc/runit/sv/ntpd /var/service

or run:

# ln -s /etc/runit/sv/ntpd /run/runit/service

In any case, finally run:

# sv up ntpd

# service ntp start
# chkconfig ntp on

# systemctl enable ntp
# systemctl start ntp

The default /etc/ntp.conf config file should be OK for common use.

If this cheat sheet has been useful to you, then please consider leaving a star here.

ntp¶

Table of contents¶

Install¶

Config¶

`ntp`¶