| local args = shell.parse(...) | |
| if #args == 0 then | |
| print("Usage: primary <type> [<address>]") | |
| print("Note that the address may be abbreviated.") | |
| return | |
| end | |
| if #args > 1 then | |
| if not component.get(args[2]) then | |
| print("no component with this address") | |
| return | |
| else | |
| component.primary(args[1], nil) | |
| component.primary(args[1], args[2]) | |
| end | |
| end | |
| if component.isAvailable(args[1]) then | |
| print(component.primary(args[1]).address) | |
| else | |
| print("no primary component for this type") | |
| end |