removing null/empty values from JSON

remove-null.sh

# from: https://github.com/stedolan/jq/issues/104

# more explicit (per value)
walk(
  if type == "object" then
    with_entries(
      select(
        .value != null and
        .value != "" and
        .value != [] and
        .value != {}
      )
    )
  else .
  end
)

# faster (marginally)
delpaths([path(..?) as $p | select(getpath($p) == null or getpath($p) == [] or getpath($p) == {}) | $p])

# usage
jq 'delpaths([path(..?) as $p | select(getpath($p) == null or getpath($p) == [] or getpath($p) == {}) | $p])' <filename.txt>