Here is a sample yaml file to explain the issue:
hello: null
---
hello: null
There are two keys with the same name in a yaml file separated by "---". Both need different values.
I am using yq in a bash script to set the values of certain keys. I am currently using this command for a yaml file without the "---" separater and it works:
yq -i -y ".hello=\"world\"" ./$PATH
But when I try and index one of the keys in a file with "---" using:
yq -i -y ".[0].hello=\"world\"" ./$PATH
I get this error:
jq: error (at <stdin>:1): Cannot index object with number
jq: error (at <stdin>:2): Cannot index object with number
I'm sure the syntax is incorrect but I can't seem to get it to work or find any documentation on this specific problem I'm facing.
Please specify which implementation of yq you are using.
For mikefarah/yq, you can use document_index (or di) to reference into a specific document:
yq 'select(document_index == 0).hello = "world"'
# or
yq 'select(di == 0).hello = "world"'
For kislyuk/yq, you can use the --slurp (or -s) flag to collect the documents into an array which you can then index into, then iterate over the items to re-generate the multi-document output:
yq --slurp -y '.[0].hello = "world" | .[]'
# or
yq -sy '.[0].hello = "world" | .[]'
Both examples output:
hello: world
---
hello: null