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摘要： References: [1] http://www.tldp.org/LDP/Bash-Beginners-Guide/html/ 1. Executing programs from a script When the program being executed is a shell scri 阅读全文

摘要： 如果在一般用户下如user，执行sudo命令，会产生两个进程。 ps -ef | grep Container root 4305 643 0 16:37 pts/39 00:00:00 sudo ./ContainerCompilation.shroot 4306 4305 0 16:37 pts 阅读全文

摘要： Reference: [1] https://www.linux.com/news/introduction-services-runlevels-and-rcd-scripts A Linux service is an application (or set of applications) t 阅读全文

摘要： Useful Commands git diff <origin/branch>...HEAD - what is waiting to be pushed git diff HEAD - what is not committed and not in the index git diff --c 阅读全文

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

摘要： Copy from: http://blog.csdn.net/y_h_t/article/details/11917531 Cassandra中所有的运行配置都是在配置文件cassandra.yaml中进行配置。 下面依次讲解Cassandra中的配置项：cluster_name设置Cassand 阅读全文