Mint Linux Installing Fonts System-Wide
check which fonts are already installed
fc-list
Navigate to /usr/share/fonts
cd /usr/share/fonts
place your downloaded *.otf and *.tff fonts in this directory.
To make the system aware of the new fonts, update the font cache by running the following command:
fc-cache -f -v
As a side note, specific users can have fonts in their home that are not available system wide. They simply place them in ~/.fonts and run 'fc-cache -f -v' as a regular user.
Other options: fontconfig, GNOME fonts or KFontView for graphical fonts installation
Traditionally on Linux-based operating systems, fonts are managed via the fontconfig library. The directories where the fonts should be installed are declared in the /etc/fonts/font.conf
Default font related directories:
/usr/share/fonts /usr/share/X11/fonts/Type1 /usr/share/X11/fonts/TTF /usr/local/share/fonts ~/.fonts
Command to get information only about a specific font: (example uses font named cantarell)
fc-list cantarell