Linux Hint published a tutorial about merging two fonts with FontForge in Linux.

How to Merge Two Fonts in Linux

Choosing right fonts for your project is no trivial task. A well designed font with a comprehensive character set improves user experience, localization, and legibility of text, especially in text heavy projects like games and ebooks. Creating a custom font from scratch matching the design philosophy of your project may not be cost effective. To overcome this, many content creators merge two fonts having similar design philosophy to create a new font. This article will explain how to combine two TrueType (.ttf) fonts using FontForge in Linux.

How to Merge Two Fonts in Linux – Linux Hint