Passing context information while a process being spawn as part of a span using a shell script or process builders.

Propagating context information while creating a process for another process, to trace the lineage, there isn't any protocol such as Http/gRPC to transport context. A common way to pass information using Environment Variables, which shall be utilized as a carrier.

Environment variables have differences between the operating systems, such as case sensitivity in Linux and case insensitivity in windows.

Defining specification/guidance, to have a common format and method for propagation using Environment Variables, will be solving many ETL tools and batch cases.