How to run 'dotnet dev-certs https --trust'?

I'm new in ASP.NET. Environment: - Ubuntu 18.04 - Visual Studio Code - .NET SDK 2.2.105 I'm in trouble with some command running. I was reading tutorial at https://learn.microsoft.com/ja-jp/aspnet/core/tutorials/razor-pages/razor-pages-start?view=aspnetcore-2.2&tabs=visual-studio-code and ran this command: ```bash dotnet dev-certs https --trust ``` I expect https://localhost should be trusted. but I found the error message; ``` $ Specify --help for a list of available options and commands. ``` It seems that the command "dotnet dev-certs https" has no --trust options. How to resolve this problem?