lk/fundamentals/time.md

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2020-01-02 00:04:35 +00:00
# systemd
Set time to synchronize with an ntp server:
> timedatectl set-ntp true
This info stays in /usr/share/zoneinfo
# Local Time
Local time is kept in /etc/localtime.
According to Dave's LPIC guide, you can set the local time by making asymboling link from your timezone to /etc/localtime, as so:
> sudo ln -sf /usr/share/zoneinfo/Europe/Belgrade /etc/localtime
...however this produced the wrong time for me. Further, /etc/localtime produces an output with cat, while the zoneinfo files do not.
# Locale
See local time, language and character settings with:
> locale
List available locales with:
> locale -a
To see additional locales which are available (but not necessarily installed):
> cat /usr/share/i18n/SUPPORTED
Set a supported locale with:
> locale-gen pl_PL.UTF-8
Then set that language, with:
> LANG=pl_PL.UTF-8
... then reboot.
# Network Time Protocol
Enter the shell with:
> ntpq
Or just glimpse and overview with:
> ntpq -q
This clock can drift, which is then listed under /var/log/ntp.drift
The config is under /etc/ntp.conf. If a line for the stats directory is listed, it'll log stats, e.g.:
`statsdir /var/log/ntpstats/`
This can show if clock drift occurs.
The config file also lets you specify servers to obtain time from.