gistfile1.txt

embulk guess guess.yml -g jsonl -o guess_output.yml

guess.yml

in:
  type: file
  path_prefix: ./test

guess_output.yml

in:
  type: file
  path_prefix: ./test
  parser:
    charset: UTF-8
    newline: CRLF
    type: jsonl
    delimiter: ','
    quote: ''
    escape: ''
    skip_header_lines: 0
    columns:
    - {name: c0, type: string}
    - {name: c1, type: string}
    schema:
    - {name: name, type: string}
    - {name: age, type: long}
exec: {}

test.json

{ "name" : "apple", "age" : 10 }
{ "name" : "banana", "age" : 16 }
{ "name" : "orange", "age" : 17 }