These scripts install the ifort compiler on the CI machines.

The content has been directly copied from the Intel OneAPI-CI examples, found here:

https://github.com/oneapi-src/oneapi-ci

Note that on Linux and macOS, shell scripts must be marked as executable: not doing so for these scripts will result in a permission error during the GitHub Action. Windows does not have such a permission system, but you can mark a script nonetheless with git:

git update-index --chmod=+x {name_of_script}

Then commit and push.