Can command line flags in Go be set to mandatory?

Question

Is there a way how to set that certain flags are mandatory, or do I have to check for their presence on my own?

Answer 1

If you have flag path, simply check if *path contains some value

var path = flag.String("f", "", "/path/to/access.log")
flag.Parse()
if *path == "" {
    usage()
    os.Exit(1)
}