The zero should have a slash to distinguish it from the letter O.
A font with a slashed zero has a distinctive design where the zero is replaced by a diagonal slash, making it easily distinguishable from an uppercase “0.”
This design element was originally used to distinguish the number zero from the letter O in typewritten documents. Today, fonts with slashed zeros can be found in both digital and print media and are often used in technical or mathematical contexts where clarity and precision are important.
- Hack - The hack font has an easily distinguishable 0. The slash is more like a vertical bullseye. See it here: https://sourcefoundry.org/hack/
- Inconsolata - Inconsolata is a monospace font, designed for code listings and the like, in print. There are a great many “programmer fonts,” designed primarily for use on the screen, but in most cases do not have the attention to detail for high resolution rendering. On Ubuntu/Mint install with sudo apt install fonts-inconsolata
Before adding new fonts, it’s a good idea to check which fonts are already installed. The command 'fc-list' will display a list of all the installed fonts on your system.
The 'fonts' program in Cinnamon:
