我们在编写 shell 文件时，通常会遇到处理一些相同逻辑的代码。这时，我们会考虑把这些代码抽取为函数以便下次再用。于是 ...

This story was originally published August 2017. Maybe collecting shells is a favorite pastime of yours, but you don’t know which is a moon snail and which is a mud snail. Or, you’re walking along the ...