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Co-authored-by: bl-ue <54780737+bl-ue@users.noreply.github.com> Co-authored-by: Starbeamrainbowlabs <sbrl@starbeamrainbowlabs.com>
36 lines
1 KiB
Markdown
36 lines
1 KiB
Markdown
# jq
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> A command-line JSON processor that uses a domain-specific language.
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> More information: <https://stedolan.github.io/jq>.
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- Output a JSON file, in pretty-print format:
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`jq . {{file.json}}`
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- Output all elements from arrays (or all the values from objects) in a JSON file:
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`jq '.[]' {{file.json}}`
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- Read JSON objects from a file into an array, and output it (inverse of `jq .[]`):
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`jq --slurp . {{file.json}}`
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- Output the first element in a JSON file:
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`jq '.[0]' {{file.json}}`
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- Output the value of a given key of each element in a JSON text from stdin:
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`cat {{file.json}} | jq 'map(.{{key_name}})'`
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- Output the value of multiple keys as a new JSON object (assuming the input JSON has the keys `key_name` and `other_key_name`):
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`cat {{file.json}} | jq '{{{my_new_key}}: .{{key_name}}, {{my_other_key}}: .{{other_key_name}}}'`
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- Combine multiple filters:
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`cat {{file.json}} | jq 'unique | sort | reverse'`
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- Output the value of a given key to a string (and disable JSON output):
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`cat {{file.json}} | jq --raw-output '"some text: \(.{{key_name}})"'`
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