Avoid operator being parsed as selector

[thardev]

Hi 🙂

So I have the following statement yq -i '.logging.writers.filename = "/var/log/__APP__/__APP__.log"' that I'm trying to use to replace the value on that nested key, but I get this error:
Error: cannot index array with 'filename' (strconv.ParseInt: parsing "filename": invalid syntax)

So I understood it is because it recognises .filename as operator instead as of a key. I tried many solutions but I cannot get it working, any clues?

Thanks!

[mikefarah]

Do you have an example of the file you are updating? I actually think the problem is 'writers' is an array of objects, and the expression is trying to index the array with 'filename' instead of a number

[thardev]

Hi @mikefarah

You are actually right, the writers entry looks like this:

logging:
  min_level: __PRINT_LEVEL__
  writers:
    - type: stdout
      format: pretty-colored
    - type: file
      format: json
      filename: /var/log/__APP__/__APP__.log
      max_size: 100
      max_backups: 10
      compress: true

So I already figured out and I solved it using the following expression: yq -i '.logging.writers[1].filename = "/var/log/__APP__/__APP__.log"'

Thanks a lot for your answer!