How to use jq for JSON parsing?

jq is a powerful tool for parsing and manipulating JSON data. Here are some basic examples of how to use jq for JSON parsing:

1. Basic Output: To pretty-print a JSON file:

   jq . file.json

2. Extracting a Specific Field: To get the value of a specific key:

   jq '.key' file.json

3. Filtering Arrays: To filter elements in an array:

   jq '.array[] | select(.field == "value")' file.json

4. Mapping and Transforming: To create a new array with specific fields:

   jq '.array | map({newKey: .oldKey})' file.json

5. Combining Filters: To extract nested fields:

   jq '.parent.child' file.json

These examples should help you get started with jq. If you have a specific JSON structure or query in mind, feel free to share, and I can provide more tailored examples!