Usage of jsonf:
  -c=true: colorize output
  -d=false: debug output to stderr
  -f=true: format output json to stdout
  -q="": json query
  -s=true: syntax hightlight
  -v=false: verbose output to stderr

$ echo '{"uid":1,"email":"user@gmail.com","address":{"city":"New-York","country":"US"}}' | jsonf

$ echo '{"uid":1,"email":"user@gmail.com","address":{"city":"New-York","country":"US"}}' \
  | jsonf -q 'value["address"]["country"]'

"US"