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36 lines
369 B
Markdown
36 lines
369 B
Markdown
# Keys
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Use the `keys` operator to return map keys or array indices.
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## Map keys
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Given a sample.yml file of:
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```yaml
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dog: woof
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cat: meow
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```
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then
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```bash
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yq eval 'keys' sample.yml
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```
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will output
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```yaml
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- dog
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- cat
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```
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## Array keys
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Given a sample.yml file of:
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```yaml
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- apple
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- banana
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```
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then
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```bash
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yq eval 'keys' sample.yml
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```
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will output
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```yaml
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- 0
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- 1
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```
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