git:20251127.4ede2d7 to git:20251127.0964987

1 added, 1 removed. Audit A to A.

---

name: data-processing

- description: Process JSON with jq and YAML/TOML with yq. Filter, transform, query structured data efficiently. Triggers on: parse JSON, extract from YAML, query config, Docker Compose, K8s manifests, GitHub Actions workflows, package.json, filter data.

+ description: "Process JSON with jq and YAML/TOML with yq. Filter, transform, query structured data efficiently. Triggers on: parse JSON, extract from YAML, query config, Docker Compose, K8s manifests, GitHub Actions workflows, package.json, filter data."

---

# Data Processing

## Purpose

Query, filter, and transform structured data (JSON, YAML, TOML) efficiently from the command line.

## Tools

| Tool | Command | Use For |

|------|---------|---------|

| jq | `jq '.key' file.json` | JSON processing |

| yq | `yq '.key' file.yaml` | YAML/TOML processing |

## Usage Examples

### JSON with jq

```bash

# Extract single field

jq '.name' package.json

# Extract nested field

jq '.dependencies | keys' package.json

# Filter array

jq '.users[] | select(.active == true)' data.json

# Transform structure

jq '.items[] | {id, name}' data.json

# Pretty print

jq '.' response.json

# Compact output

jq -c '.results[]' data.json

```

### YAML with yq

```bash

# Extract field from YAML

yq '.services | keys' docker-compose.yml

# Get all container images

yq '.services[].image' docker-compose.yml

# Extract GitHub Actions job names

yq '.jobs | keys' .github/workflows/ci.yml

# Get K8s resource names

yq '.metadata.name' deployment.yaml

# Convert YAML to JSON

yq -o json '.' config.yaml

```

## When to Use

- Reading package.json dependencies

- Parsing Docker Compose configurations

- Analyzing Kubernetes manifests

- Processing GitHub Actions workflows

- Extracting data from API responses

- Filtering large JSON datasets