Using jq command tools to filter JSON.
By Anak Wannaphaschaiyong
This blog summarizes jq documentation’s tutorial 1.
If you can fully understand what the following command do, you don’t need read the rest of the blog. That’s pretty much sum up all jq can do.
curl 'https://api.github.com/repos/stedolan/jq/commits?per_page=5' | jq '[.[] | {message: .commit.message, name: .commit.committer.name, parents: [.parents[].html_url]}]'
If you are still confused, read on.
There are only 4 concepts in jq shown below.
# pipelining
jq '.[] | {name: [.key[].childkey]} '
# only apply to list
jq '.[0]' # select first json from a list
jq '.[]' # pass each json in a list one at a time.
# apply to non-list
jq '[[[[{name: .key.childkey},{name: .otherkey.childotherkey}]]]]' # only accept 1. nested lists of json 2. json