How do I Run a Script to Create & Deploy Req'd Org Artifacts?

Hi,    I'm working on the Get Started with Agentforce DX; Run a Script to Create an Deploy Required Org Artifacts section on the trailhead. However in the Terminal section of VS Code I enter the command " ./setup" and an error pops up "No file or directory". This command is suppose to display steps it's running & green check marks to show what's complete. There is a unique username that the script creates but I seem to remain stuck on the error above.    This is a very important step to complete before I can finish the next unit "Author Your Agent Using Agent Script; Preview the Agent Using Live Model".    If anyone has any successful tips, I'd welcome a reply.    Thanks,  LV