| //go:build OMIT | |
| package main | |
| import ( | |
| "fmt" | |
| "runtime" | |
| ) | |
| func main() { | |
| fmt.Print("Go runs on ") | |
| switch os := runtime.GOOS; os { | |
| case "darwin": | |
| fmt.Println("macOS.") | |
| case "linux": | |
| fmt.Println("Linux.") | |
| default: | |
| // freebsd, openbsd, | |
| // plan9, windows... | |
| fmt.Printf("%s.\n", os) | |
| } | |
| } |