package main import (   "os"   "os/exec"   "fmt"   "flag"   "strings" ) func main() {   command := flag.String("cmd", "pwd", "Set the command.")   args := flag.String("args", "", "Set the args. (separated by spaces)")   flag.Usage = func() {     fmt.Fprintf(os.Stderr, "Usage: %s [-cmd <command>] [-args <the arguments (separated by spaces)>]\n", os.Args[0])     flag.PrintDefaults()   }   flag.Parse()   fmt.Println("Command: ", *command)   fmt.Println("Arguments: ", *args)   var argArray []string   if *args != "" {     argArray = strings.Split(*args, " ")   } else {     argArray = make([]string, 0)   }   cmd := exec.Command(*command, argArray...)   buf, err := cmd.Output()   if err != nil {       fmt.Fprintf(os.Stderr, "The command failed to perform: %s (Command: %s, Arguments: %s)", err, *command, *args)       return   }    fmt.Fprintf(os.Stdout, "Result: %s", buf) }