Go에서 가변 인수를 사용하여 시스템 명령을 안전하게 실행하는 방법은 무엇입니까?

import (
    "fmt"
    "os/exec"
    "strings"
    "sync"
)

func exeCmd(cmd string, wg *sync.WaitGroup) {
    fmt.Println("command is ", cmd)
    // Splitting head (e.g., "g++") from the rest of the command (e.g., "-c file.cpp")
    parts := strings.Fields(cmd)
    head := parts[0]
    parts = parts[1:len(parts)]

    out, err := exec.Command(head, parts...).Output()
    if err != nil {
        fmt.Printf("%s", err)
    }
    fmt.Printf("%s", out)
    wg.Done() // Signal to waitgroup that this goroutine is done
}

func main() {
    wg := new(sync.WaitGroup)
    wg.Add(3)

    x := []string{
        "echo newline >> foo.o",
        "echo newline >> f1.o",
        "echo newline >> f2.o"}

    go exeCmd(x[0], wg)
    go exeCmd(x[1], wg)
    go exeCmd(x[2], wg)

    wg.Wait()
}