A simple wrapper for yaml-include - reads in files using include tags and writes them back out as a flat YAML. It is not necessary to run flatten-include-yaml from the same directory as the input YAML file; it will temporarily change to that directory while loading.
flatten-include-yaml [options] <input file> ...
Multiple input YAML files can be passed on one command line. Note that this does not make sense with the -o,--output option.
Specifies the output file to be written. The default is the name of the input file with -flat inserted before the extension; foo.yaml → foo-flat.yaml, bar.yml → bar-flat.yml.