Starting from v5, Fira Code does not distribute OTF. All packages here that have otf-* in the name are now outdated and should be replaced with ttf equivalents.

1. Make sure that the universe (for Ubuntu) or contrib (for Debian) repository is enabled (see how-to for Ubuntu or Debian docs)
2. Install fonts-firacode package either by executing sudo apt install fonts-firacode in the terminal or via GUI tool (like “Software Center”)

Fira Code package is available in the official repository: ttf-fira-code.

Variant of Fira Code package is available in the AUR: otf-fira-code-git.

emerge -av media-fonts/fira-code

Fira Code package is available in the official repository.

To install, perform the following command:

dnf install fira-code-fonts

sudo eopkg install font-firacode-ttf

xbps-install font-firacode

With most desktop-oriented distributions, double-clicking each font file in the ttf folder and selecting “Install font” should be enough. If it isn’t, create and run download_and_install.sh script:

#!/usr/bin/env bash

fonts_dir="${HOME}/.local/share/fonts"
if [ ! -d "${fonts_dir}" ]; then
    echo "mkdir -p $fonts_dir"
    mkdir -p "${fonts_dir}"
else
    echo "Found fonts dir $fonts_dir"
fi

version=5.2
zip=Fira_Code_v${version}.zip
curl --fail --location --show-error https://github.com/tonsky/FiraCode/releases/download/${version}/${zip} --output ${zip}
unzip -o -q -d ${fonts_dir} ${zip}
rm ${zip}

echo "fc-cache -f"
fc-cache -f

More details