YSK that if you use iCloud Drive, adding ".nosync" to the end of the name of a file or folder will cause it not to be transferred.
from /r/YouShouldKnow
YSK，如果你使用iCloud Drive，在文件或文件夹名称的末尾添加".nosync "将导致它不被传输。
YSK，如果你使用iCloud Drive，在文件或文件夹名称的末尾添加".nosync "将导致它不被传输。
YSK that if you use iCloud Drive, adding ".nosync" to the end of the name of a file or folder will cause it not to be transferred.
from /r/YouShouldKnow