# Pretty-print YAML
yq '.' file.yaml

# Extract specific field
yq '.fieldName' file.yaml

# Extract nested field
yq '.spec.containers[0].name' pod.yaml

# Access array element
yq '.[0]' array.yaml
yq '.items[2]' data.yaml

# Read specific field
yq '.metadata.name' deployment.yaml

# Read nested structure
yq '.spec.template.spec.containers[].image' deployment.yaml

# Read with default value
yq '.optional // "default"' file.yaml

# Check if field exists
yq 'has("fieldName")' file.yaml

# Update field value
yq -i '.metadata.name = "new-name"' file.yaml

# Update nested field
yq -i '.spec.replicas = 3' deployment.yaml

# Add new field
yq -i '.metadata.labels.app = "myapp"' file.yaml

# Delete field
yq -i 'del(.spec.nodeSelector)' file.yaml

# Append to array
yq -i '.items += {"name": "new-item"}' file.yaml

# Update all matching elements
yq -i '(.items[] | select(.name == "foo")).status = "active"' file.yaml

# Split multi-document YAML
yq -s '.metadata.name' multi-doc.yaml

# Select specific document (0-indexed)
yq 'select(document_index == 0)' multi-doc.yaml

# Process all documents
yq eval-all '.' multi-doc.yaml

# Filter documents
yq 'select(.kind == "Deployment")' k8s-resources.yaml

# Combine YAML files
yq eval-all '. as $item ireduce ({}; . * $item)' file1.yaml file2.yaml

# Get all keys
yq 'keys' file.yaml

# Select specific fields
yq '{name, version}' file.yaml

# Merge objects
yq '. * {"updated": true}' file.yaml
yq eval-all 'select(fileIndex == 0) * select(fileIndex == 1)' base.yaml override.yaml

# Deep merge
yq eval-all '. as $item ireduce ({}; . *+ $item)' base.yaml override.yaml