1.方法代码：

func shellExec(cmdStr string) (string , error){
     cmd := exec.Command("bash","-c",cmdStr)
     strOut , strErr := bytes.Buffer{} , bytes.Buffer{}
     cmd.Stdout = &strOut
     cmd.Stderr = &strErr
     err := cmd.Run()

     if err != nil {
         return strErr.String() , err
     }
     return strOut.String() , err
}

2.示例代码：

func main(){
      res , err := shellExec("ls")
      fmt.Println(res , err)
}