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28 lines
564 B
Markdown
28 lines
564 B
Markdown
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# jq
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> A lightweight and flexible command-line JSON processor.
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- Output JSON file:
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`cat {{file}} | jq`
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- Output all elements from JSON array in file, or all key-value pairs from JSON objects in file:
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`cat {{file}} | jq .[]`
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- Read JSON objects from file, into array, and output (inverse of `jq .[]`):
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`cat {{file}} | jq --slurp`
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- Output first element in JSON file:
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`cat {{file}} | jq .[0]`
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- Output "key" of first element in JSON file:
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`cat {{file}} | jq .[0].{{key}}`
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- Output "key" of each element in JSON file:
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`cat {{file}} | jq 'map(.{{key}})'`
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