locale

Your locale tells the computer your location, preferred time-and-date format, standard language, papersize, et c. A list of supported locales is available at /usr/share/i18n/SUPPORTED

See a full list with:

1cat /usr/share/i18n/SUPPORTED

Take the first portion to generate full locale information for a region:

1locale-gen ru_RU.UTF-8

Then use this for the current shell session with

1LANG=ru_RU.utf8

Expand this to the entire system with:

1export LANG=ru_RU.utf8

You can make this permanent for one user by adding this line to the ~/.profile or ~/.bashrc.

Make it permanent for the entire system by editing:

1sudo vim /etc/defaults/locale

Variables

While generally set together, the variables setable are:

Variable Description
LC_TIME Date and time
LC_NUMERIC Nonmonetary numeric formats
LC_PAPER A4 vs wrong paper
LC_ADDRESS Address formats, for those amazingly concise Polish addresses.
LC_TELEPHONE Telephone number formats.
LC_MEASUREMENT Metric or Imperial, but no Impetric available.
LC_IDENTIFICATION Metadata about the locale information
LC_ALL Just everything at once.