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_name1 and key_name2):

cat file.json | jello '{"key1": _.key_name1, "key_name": _.key_name2}'

• Output the value of a given key to a string (and disable JSON output):

cat file.json | jello -r '"some text: " + _.key_name'