yq VS pup

Install jq and yq, and wrap your commands with | yq -y ..

Confusingly there is another project called yq that does exactly what you're suggesting and it's a preprocessor that converts yaml to json and then used jq. https://github.com/kislyuk/yq

yq

I personally find the yq tool from https://github.com/kislyuk/yq much more useful: it has all the same options and formats as `jq` (as it's really a wrapper around jq). Rather than the `yq` in the OP here where only partial functionality exists.

XML data from the API can be parsed and filtered with xq. There may be multiple ways to get it; first try the yq toolset which includes it.

There is also yq [1], which attempts the same for yaml, toml and xml. (And confusingly also contains a binary named "xq" for querying xml, however with a different syntax)

[1] https://github.com/kislyuk/yq

And lnk=$(curl -s https://www.selfstudys.com$url |grep "PDFFlip" | cut -d '"' -f 6) to lnk=$(curl -s https://www.selfstudys.com$url | pup "div#PDFF attr{source}" ) here pup will print content of source attribute from div tag with id PDFF i dont know that much about html & css so this is what i came up with. but i am sure you can also select class & make list of suburls from them. check out the video from bugswriter on pup or read docs from git hub for more info github link: https://github.com/ericchiang/pup

jq is pretty amazing. If you are comfortable with its jquery-like CSS selector syntax, then I should also mention a couple similar cli utilities that apply it to HTML: htmlp and pup.

Regex is not a great tool for parsing web pages. Open up a browser dev tools window and select a bit of the page. Right click > copy... XPath expression or CSS selector. A proper web scraping tool will accept either of those. No muss, no fuss. You can even use simple command line tools: xpath or pup

This is HTML to JSON, written in Rust, and there's also pup[1] which I found out about just the other day on HN[2] which uses a very similar syntax (CSS selectors) but outputs HTML and is written in Go.

I can see room for both though it would interesting to have a more detailed comparison to go on (e.g. types of HTML, speed etc).

[1] https://github.com/ericchiang/pup

[2] https://news.ycombinator.com/item?id=33805732

It looks like the project became inactive for a bit and there are alternatives such as htmlq, etc. https://github.com/ericchiang/pup/issues/150

Another tool worth mentioning is pup - it can produce JSON output which means you can pipe it to jq