Programming guide
relix version
Prints the versions of relix and of the Relix engine it runs.
Usage
relix version [OPTIONS]
It also takes the global options.
Examples
relix version, like relix --version, prints one line: the version of the command, then the version of the Relix engine it runs, as
relix 1.0.0 (engine 1.0.0)
The two are numbered independently: a release of the command names the engine release it was built on.