In MiKTeX as well as TeX Live and therefore also in MacTeX KOMA-Script is available as a package. The installation of the current official version should therefore always be done via the respective package manager. Furthermore there is the possibility for experienced users to install a current pre-release or different version of KOMA-Script.
In the default minimal installation of MiKTeX KOMA-Script is not yet included. However, if you have activated the on-the-fly post-installation of required packages, it is sufficient to compile a minimal document with a KOMA-Script class like
\documentclass{scrartcl} \begin{document} Test \end{document}
to trigger the installation. Alternatively you can start the MiKTeX console and install the package koma-script
via the package manager.
The best place to ask questions about this is on a MiKTeX forum.
With Vanilla TeX Live it is automatically installed in the default full installation. If you have installed only a smaller scheme of TeX Live at first, you can install the package koma-script
at any time using the package manager tlmgr
via:
tlmgr install koma-script
or
sudo tlmgr install koma-script
Questions about the installation with Vanilla TeX Live are best asked in a forum about TeX Live.
For TeX Live packages from Linux distributions, it should be included in one of the many individual TeX Live packages. Please use the search function of the Linux package manager to find the package. If necessary, install the complete TeX Live (usually available as Linux package texlive-full
or texlive-complete
).
Questions about installing the TeX Live packages of your Linux distribution are best asked in a forum related to your Linux distribution.
MacTeX has its own package manager as well as the capabilities of tlmgr
of a Vanilla TeX Live installation. Therefore, please refer to the above explanations of TeX Live.