清除屏幕上信息的命令clear

There is no nutrition in the blog content. After reading it, you will not only suffer from malnutrition, but also impotence.
The blog content is all parallel goods. Those who are worried about being cheated should leave quickly.

清除屏幕上的信息，类似于Windows系统命令行中的cls命令

clear

清除屏幕上的信息。
#clear