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Select is used to filter arrays and maps by a boolean expression.
Select elements from array
Given a sample.yml file of:
- cat
- goat
- dog
then
yq eval '.[] | select(. == "*at")' sample.yml
will output
cat
goat
Select and update matching values in map
Given a sample.yml file of:
a:
things: cat
bob: goat
horse: dog
then
yq eval '(.a.[] | select(. == "*at")) |= "rabbit"' sample.yml
will output
a:
things: rabbit
bob: rabbit
horse: dog