Get JSON string from within javascript on a html page using shell script

Question

There\'s valid json in a javascript on a html page that I want to parse with a shell script. First of all I would like to get the entire json string from { to

Answer 1

One option might be to use pup, at least for parsing the HTML:

< input.html pup 'script:not(:empty) text{}' |
  grep foo.bar.Processor.message | grep -o '{.*}' |
  jq -r '.head.url
         | split(";")[]
         | select(test("barid="))
         | sub("barid=";"")'

With your HTML (adjusted to ensure the JSON in the HTML is valid), this produces:

347EDAFA2B136D7825745B0A490DE32

Of course there are many caveats. YMMV.