我在 MacOS 10.11.6 上遇到 rsync (3.1.2.) 问题，因为我不知道如何正确输入主机名。我的方法是这样的：
$ sudo rsync -vaE --progress smb://company-nas/old_Projects/old_Projects_11 /Volumes/old_Projects_11
我得到的是：
ssh: Could not resolve hostname smb: nodename nor servname provided, or not known
rsync: connection unexpectedly closed (0 bytes received so far) [Receiver]
rsync error: unexplained error (code 255) at io.c(226) [Receiver=3.1.2]