golang flag简单用法 - 好文

package main import ( "flag" "strings" "os" "fmt" ) var ARGS string func main()
{var uptime *bool = new(bool) flag.BoolVar(uptime,"u", false, "print system
uptime") flag.Parse() ARGS = strings.Join(flag.Args(), " ") if len(os.Args) < 2
{ flag.Usage() os.Exit(1) } if *uptime { fmt.Println("12 days") } }