How to send request data to file?

[JuunyK]

When sending request data(payload), I want to send it to the file specified by using @ character like curl utility.
The request data is too long when performing BIOS setup, BIOS/BMC upgrade etc.

[mraineri]

Currently we don't have a method of doing this, but it seems reasonable to add based on the support of this for other tools.

Do you have specific examples for using this parameter in the context of redfishtool? The only case that jumps out to me is when using the RAW command to perform arbitrary PATCH, PUT, or POST operations on a resource.