We have a script that will login to a remote server and upload all files which have changed on the local system, but the script will only do this for a single directory.
我们现在的脚本可以登录到远程服务器并上载所有本地系统中修改过的文件，但是脚本还只是仅仅能处理单一目录。
Our program has one basic requirement: it must connect to a remote SFTP server and upload our files.
我们的程序有一个基本需求：它要连接到一台远程的SFTP服务器并上载我们的文件。
Upload the local file to the remote server.
上载本地文件到远程服务器。
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