I want to write the 'top' command's output to another file. But when I tried it with the below code, I get the below error:

'exit status 1'.

Here is my code:

```
package main

import "os/exec"

func main() {
    app := "top"
    cmd := exec.Command(app)
    stdout, err := cmd.Output()

    if err != nil {
        println(err.Error())
        return
    }

    print(string(stdout))
}

```

Any help is greatly appreciated. Thanks in advance.