jq and yq

2021-09-28

$ yq eval --front-matter=extract '.' test.md

Running the above command against the markdown for test.html:

---
title: test
subtitle: markdown test page for this blog
date: 2021-09-28
keywords: [test, markdown]

extract just the keywords:

$ yq eval --front-matter=extract '.keywords[]' test.md
test
markdown

xq

Turning an OPML file (eg from Overcast) into a Markdown list:

xq -r '.opml.body.outline.outline[] | ("* [" + ."@title" + "](" + ."@htmlUrl" + ")")' overcast.opml | sort -u