SCP will start from the very beginning, trying to copy every file, whereas RSYNC will continue from where it stopped.

SCP 将从头开始，尝试复制每个文件，而 RSYNC 将从停止处继续。

For example, here just by specifying these three flags, I'm telling RSYNC to kind of preserve all the permissions whenever possible to try to check if the file has already been copied.

例如，在这里仅通过指定这三个标志，我告诉 RSYNC 尽可能保留所有权限，以尝试检查文件是否已被复制。

This solution is much better than something like creating an alias for SSH, because other programs like SCP and RSYNC also know about the dotfiles for SSH and will use them whenever they are there.

此解决方案比为 SSH 创建别名之类的方法要好得多，因为 SCP 和 RSYNC 等其他程序也知道 SSH 的点文件，并且只要它们存在就会使用它们。