Анатолий

package main

import (
	"bytes"
	"fmt"
	"os/exec"
)

func main() {
	cmd := exec.Command("dir")
	var buf bytes.Buffer
	cmd.Stdout = &buf
	err := cmd.Start()
	if err != nil {
		fmt.Printf("error: %v\n", err)
	}
	err = cmd.Wait()

	fmt.Printf("Command finished with error: %v\n", err)
	fmt.Printf("Command finished with output: %v\n", buf.String())
}