Deleting from document 1

[webdawg]

This does not seem to work:

yq 'select(documentIndex == 0) | .; select(documentIndex == 1) | del(.etcd.local)' init_mutable.yaml.test

[webdawg]

I do not know if that syntax was correct but the thing I was trying to solve is solved by |=

I did not know about it, and was having trouble dealing with multi document yaml

[mikefarah]

Try

yq 'del(select(documentIndex == 1 | .etcd.local))' file.yaml