如何以编程方式使用R提取或解压缩.7z（7-zip）文件

I'm trying to automate the extraction of a number of files compressed with 7-zip. I need to automate this process, because a) there are many years of data I'd like to unlock and b) I'd like to share my code with others and prevent them from repeating the process by hand.I'm trying to automate the extraction of a numb