Pick

Filter a map by the specified list of keys. Map is returned with the key in the order of the pick list.
Similarly, filter an array by the specified list of indices.
Pick keys from map
Note that the order of the keys matches the pick order and non existent keys are skipped.
Given a sample.yml file of:
myMap:
  cat: meow
  dog: bark
  thing: hamster
  hamster: squeek
then
yq '.myMap |= pick(["hamster", "cat", "goat"])' sample.yml
will output
myMap:
  hamster: squeek
  cat: meow
Pick indices from array
Note that the order of the indices matches the pick order and non existent indices are skipped.
Given a sample.yml file of:
- cat
- leopard
- lion
then
yq 'pick([2, 0, 734, -5])' sample.yml
will output
- lion
- cat

Path

Pipe

Last modified 2mo ago