摘要：Linux网络管理 （YouTube视频教程） ISO/OSI七层模型 ISO: The International Organization for Standardization 国际标准化组织 OSI: Open Systems Interconnection model 开放系统互连模型 M 阅读全文

摘要：1. Final keyword Once a variable X is defined final, you can't change the reference of X to another object, after the initialization. But you can chan 阅读全文

摘要：References: [1] http://tutorials.jenkov.com/java-date-time/index.html [2] https://docs.oracle.com/javase/tutorial/datetime/iso/period.html 1. Java 8 a 阅读全文

摘要：Reference: [1] https://www.mkyong.com/regular-expressions/how-to-validate-ip-address-with-regular-expression/ Description Whole combination means, dig 阅读全文

摘要：Copy from http://blog.chinaunix.net/uid-20380484-id-1692999.html bash下有很多像{}、[]等一些符号命令，下面是我对一些常用的符号命令的学习笔记，若有错误或纰漏望各位兄弟指正。一、.(source).（点）与source命令一样，从 阅读全文