科普 ｜ 一文讀懂 DAG（有向無環圖）技術

https://baijiahao.baidu.com/s?id=1613728387077554506&wfr=spider&for=pc

https://baike.baidu.com/item/%E6%9C%89%E5%90%91%E6%97%A0%E7%8E%AF%E5%9B%BE/10972513?fr=aladdin

https://blog.csdn.net/omnispace/article/details/80381329

• java檔案編譯後額外生成的$1.class是怎麼一回事

https://www.aliyun.com/jiaocheng/848594.html

java編譯後的檔案出現xx$1.class的原因

https://blog.csdn.net/u013703363/article/details/68059296

class$1,class$2,class$innerclass中的$的含義

https://www.cnblogs.com/stefanlee/p/3403445.html

solaris du命令

https://blog.csdn.net/iteye_11541/article/details/82062938

https://docs.oracle.com/cd/E26926_01/html/E29113/mv-1.html#scrolltoc

Solaris 命令 小結

https://jingyan.baidu.com/article/656db918f9640ae381249c82.html

shell echo列印換行的方法

https://blog.csdn.net/lixiaohuiok111/article/details/18313039

shell指令碼--echo和printf列印輸出

https://www.cnblogs.com/f-ck-need-u/p/5915076.html