yq

This documentation uses Mike Farah’s yq, a command-line processor for YAML, JSON, XML, properties, CSV, and TSV. Other unrelated tools also use the name yq, so confirm which implementation is installed before following examples.

Request YAML from md-utils and continue the pipeline with yq:

md-utils fm dump posts/ --format yaml | yq '.frontMatter[].title'

yq uses jq-like expressions, but it is not a complete implementation of jq. It also has format-specific behavior around YAML styles, comments, XML attributes, and type inference. Consult its documentation before relying on lossless round trips.