How to install new TTF, OTF or TTC fonts on a Linux system
Any TTF, OTF, or TTC (TrueType Collection) files can be manually installed on an ad hoc basis.
Opening a Nautilus window to
fonts:// and dragging and dropping.
Copy a font file in the directory
/usr/local/share/fonts (for all users) or
~/.fonts (for a specific user).