jello
A command-line JSON processor using Python syntax. More information: https://github.com/kellyjonbrazil/jello.
- Pretty-print JSON or JSON-Lines data from stdin to stdout:
cat {{file.json}} | jello
- Output a schema of JSON or JSON Lines data from stdin to stdout (useful for grep):
cat {{file.json}} | jello -s
- Output all elements from arrays (or all the values from objects) in JSON or JSON-Lines data from stdin to stdout:
cat {{file.json}} | jello -l
- Output the first element in JSON or JSON-Lines data from stdin to stdout:
cat {{file.json}} | jello _[0]
- Output the value of a given key of each element in JSON or JSON-Lines data from stdin to stdout:
cat {{file.json}} | jello '[i.{{key_name}} for i in _]'
- Output the value of multiple keys as a new JSON object (assuming the input JSON has the keys
key_name
andother_key_name
):cat {{file.json}} | jello '{"{{my_new_key}}": _.{{key_name}}, "{{my_other_key}}": _.{{other_key_name}}}'
- Output the value of a given key to a string (and disable JSON output):
cat {{file.json}} | jello -r '"{{some text}}: " + _.{{key_name}}'
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