ASP.NET Core Environment variable colon in Linux

Question

In ASP.NET Core nested configuration via environment variables is typically done via colon syntax:

MySettings:SomeSetting=MyNewValue

How do you do this in Linux? The export command rejects the colon? eg:

export MySettings:SomeSetting=MyNewValue

Errors with

bash: export: `MySettings:SomeSetting=MyNewValue': not a valid identifier 

Answer 1

Reading the docs carefully:

If : cannot be used in environment variables in your system, replace : with __ (double underscore).

ie:

export MySettings__SomeSetting=MyNewValue