Table of Contents
Overview
jq is a lightweight command-line JSON processor. It’s like sed for JSON data - you can use it to slice, filter, map, and transform structured data.
Key Features
- JSON parsing and formatting
- Data filtering and transformation
- Complex data queries
- Array and object manipulation
- Stream processing
- Custom functions
- Regular expressions
- Mathematical operations
Basic Usage
Simple Queries
Common Options
Filters
Basic Filters
Complex Filters
Value Modifications
Structure Changes
Array Operations
Array Manipulation
Array Aggregation
Object Operations
Object Manipulation
Nested Operations
Advanced Features
Custom Functions
Variables
Best Practices
Error Handling
Example Scripts
Data Analysis
API Response Processing
Configuration Generator
Remember:
- Use appropriate filters for performance
- Handle errors gracefully
- Document complex transformations
- Test with sample data
- Consider memory usage for large files
- Use raw output when needed
For detailed information, consult the jq manual (man jq
) and the jq documentation.