mirror of https://github.com/CrimsonTome/tldr.git
28 lines
650 B
Markdown
28 lines
650 B
Markdown
# jq
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> A lightweight and flexible command-line JSON processor.
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- Output a JSON file, in pretty-print format:
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`cat {{file}} | jq`
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- Output all elements from arrays (or all key-value pairs from objects) in a JSON file:
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`cat {{file}} | jq .[]`
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- Read JSON objects from a file into an array, and output it (inverse of `jq .[]`):
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`cat {{file}} | jq --slurp`
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- Output the first element in a JSON file:
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`cat {{file}} | jq .[0]`
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- Output the value of a given key of the first element in a JSON file:
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`cat {{file}} | jq .[0].{{key_name}}`
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- Output the value of a given key of each element in a JSON file:
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`cat {{file}} | jq 'map(.{{key_name}})'`
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