The command allows YAML (and JSON, since all JSON is YAML) files to be queried using a simple syntax that is nearly identical to the popular stedolan/jq tool (written in C). In fact, uses the same that the tool does (just without the Cobra). The first argument is the and almost always begins with a dot (.). See the project for exact syntax (until more documentation is updated here to contain the same). The remaining arguments are the names of one or more files. If no file argument is passed standard input is assumed (per UNIX filter philosophy). Note that the special dash (-) filename is not supported even though it was in the original tool.