func uploadFile(c *easyftp.Client, from string, to string) {
r, err := os.Open(from)
if err != nil {
fmt.Println("failed to open upload local file:", err)
return
}
defer r.Close()
err = c.Stor(to, r)
if err != nil {
fmt.Println("failed to open remote file:", err)
return
}
}
