jq2

extract json data

install

npm install -g jq2

usage

jq2 <lookupstring> [filename]

if no filename is provided it will use stdin. $ in the <lookupstring> is a reference to the javascript object.

examples

echo '{"a": {"b": [ 123 ]}}' | jq2 '$.a.b[0]' #123
echo '{"a": {"b": [ 123 ]}}' | jq2 'Math.pow($.a.b[0], 2)' #15129
echo '[" foo bar "," baz "]' | jq2 '$.map(s => s.trim()).join("")' #foo barbaz

# lodash is included so this will work too
echo '[" foo bar ", " baz "]' | jq2 '$.map(_.trim).join("")' #foo barbaz

echo '{"a": 123}' > file.json
jq2 '$.a' file.json #123