摘要：
Two ways to print info from terminal - echo & printf - Echo a. Exclamation mark is supported in single quotation mark b. Exclamation mark is NOT suppo 阅读全文
摘要：
YAML - YAML An't a Markup Lanague P.S. YAML was originally was side to mean Yet Another Markup Language, referencing its purpose as a markup lanaguage 阅读全文
