I'm looking to get a rich diff between state and provider into a text file / json file. But when I run

pulumi refresh --diff [--json] > file

, it responds with the error message

error: --yes or --skip-preview must be passed in to proceed when running in non-interactive mode

Can anyone suggest a workaround to get the details into a file for easier viewing, without doing the actual refresh?

I think you need https://github.com/pulumi/pulumi/issues/10966

But also, is there a bash solution? Some way to convince the tool that it's running interactively, maybe piping

n

, or anything else?

You can use something like script or unbuffer to trick pulumi into thinking it's connected to a tty