installing new fonts
You have a new font that you want to install system-wide. For instance, you copy some
*.ttf fonts from a Windows machine (from
C:\Windows\Fonts\) and you want to use them.
sudo apt-get install font-manager
With this software you can also browse your fonts. To install a new font, click on the Manage fonts icon in the bottom left corner next to the Save icon.
Tip from here.