yq
yq is a lightweight, portable command-line YAML processor that allows developers to query, modify, and manipulate YAML files using a syntax similar to jq for JSON. It supports various operations like filtering, updating, and converting YAML data, making it useful for tasks such as configuration management, data extraction, and automation in DevOps workflows. The tool is written in Go and can handle YAML, JSON, XML, and other formats through plugins.
Developers should learn yq when working with YAML-based configurations in Kubernetes, Docker Compose, Ansible, or CI/CD pipelines, as it simplifies parsing and transforming YAML data directly from the command line. It is particularly valuable for automating tasks like extracting specific values, updating configuration files programmatically, or converting between YAML and JSON formats in shell scripts.