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tldr/pages/common/jello.md
Kelly Brazil 675c18582c
jello: add page (#6113) 
* jello: add page

add page for jello command (I am the author) https://github.com/kellyjonbrazil/jello

* add bash language identifier

* add string example

* remove mult-line command example that was causing CI failure

* Uppercase Python

Co-authored-by: marchersimon <50295997+marchersimon@users.noreply.github.com>

* move quotation marks

Co-authored-by: marchersimon <50295997+marchersimon@users.noreply.github.com>

* add bracket at beginning of dictionary

* make 'some text` a variable

Co-authored-by: marchersimon <50295997+marchersimon@users.noreply.github.com>

* update stdin/stdout wording

Co-authored-by: bl-ue <54780737+bl-ue@users.noreply.github.com>

* Clarify stdin and stdout. Also, change JSON LInes to JSON-Lines

* Clarify 'grepable'

Co-authored-by: marchersimon <50295997+marchersimon@users.noreply.github.com>
Co-authored-by: bl-ue <54780737+bl-ue@users.noreply.github.com>
2021-06-12 16:30:03 +02:00

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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 and other_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}}'