cheat.sheets/sheets/yq

# yq
# A lightweight and portable command-line YAML processor

# This is for yq v3. For version 4, use 'yq_v4'

# Read spec.template node from example.yml
yq r example.yml spec.template

# Read from stdin
cat sample.yaml | yq r - b.c

# Print the path
yq r --printMode p "a.thing*.*"

# Print the path and value
yq r --printMode pv "a.thing*.*"

# Print the length of a list
yq r sample.yml --length animals

# Read with conditions
yq r sample.yml spec.metadata[name==myapp]

# Collect results into an array
yq r sample.yaml --collect a.*.animal

# Read from the 2nd docuemnt
yq r -d1 sample.yaml b.c

# Validate a document
yq v valid.yaml

# Compare documents
yq compare data1.yaml data2.yaml

# Write b.c value with 'cat'
yq w sample.yaml b.c cat

# Delete b.c node in place from sample.yaml
yq d -i sample.yaml b.c

# Merge documents
yq merge data1.yaml data2.yaml

# Shell completion
yq shell-completion