Voila is a DSL (domain-specific language) for interacting in a fast, reliable, versatile, safe & multithreaded way with files & directories. It is based on a CLI tool, although you can write your Voila code and do something like this voila DIRECTORY "$(cat operations.vla)". Voila is mainly tested in Linux, so should work better in *nix (Linux, *BSD, macOS, etc) than in Windows-based operating systems, but shouldn't be any problems on them. Voila is completely cross-platform. Voila scripts are interpreted, but optionally you can compile it like you'd do with other programming languages.