Here is a complete installation and usage tutorial with pictures.
This article demonstrates with Linux Mint 17.1 with an English locale.
You will need to enter the root password because this makes system-level changes. You will return to the Install / Remove Languages dialog.
Surprisingly, a default installation of Linux Mint 17.1 might not have all language files installed. Since we chose English (US) as the default language, select it and then click the Install language packs button. If one does not exist, then this message will appear: This is something that should be completed as part of a standard Linux installation whether on not you will use an additional language. Did you notice that all English languages showed UTF-8?
When we see Japanese text, we will know for certain that everything is working properly.
Installing an alternate input method in Linux Mint 17.1 is not complicated, but it requires a number of steps.
Linux supports input methods that allow you to type in your chosen language. As an example of what is possible, you can mix and match several languages within the same text file, enter non-locale text in a search engine, or compose an email to a faraway friend in his native tongue.
This updated article explains how to install support for the Japanese language on an English installation of Linux Mint 17.1 so we can type filenames, Internet searches, and compose emails from a QWERTY keyboard.
Click the Install / Remove Languages button located in the top half of the dialog. This is where we can choose from a multitude of languages possible on Linux. Since this example demonstrates with Japanese, scroll down to find Japanese (or press “j” on the keyboard) and select the line that reads Japanese, Japan UTF-8 and click the Install button.
The process is similar for most Linux distributions, and any language can be installed.
In this example, we are using Linux Mint 17.1 (Cinnamon) due to its excellent language support, and Japanese was chosen since its typed characters look nothing like English.
If this is not the case it is now your responsibility to reopen the Bug report if necessary, and/or fix the problem forthwith.
(NB: If you are a system administrator and have no idea what I am talking about this indicates a serious mail system misconfiguration somewhere.