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