Jq filter examples

Example 1: jq filter array

$ json='[{"genre":"deep house"}, {"genre": "progressive house"}, {"genre": "dubstep"}]'
$ echo "$json" | jq -c '.[] | select(.genre | contains("house"))'
{"genre":"deep house"}
{"genre":"progressive house"}

Example 2: jq select

$ jq '.[] | select(.location=="Stockholm")' json
{
  "location": "Stockholm",
  "name": "Walt"
}
{
  "location": "Stockholm",
  "name": "Donald"
}

Example 3: jq list top nodes

echo '{"node1":"foo", "node2":"bar","node3": {"inner-node": "baz"}}' | jq '. |=keys'

[
  "node1",
  "node2",
  "node3"
]

Example 4: filter jq

jq '.' | grep value