2019.05.27:后仿
http://www.mamicode.com/info-detail-1764134.html
http://www.chipsbank.com/news_detail/newsId=119.html
https://www.cnblogs.com/sunmaoduo/p/4679924.html
export $PATH=/home/my/bin
2019.05.29
https://blog.csdn.net/richardhuang1123/article/details/6924182
https://blog.csdn.net/fengxiaocheng/article/details/81176450
https://blog.csdn.net/u011729865/article/category/5892487/2?
http://www.verilab.com/