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PMP项目管理笔记，大受裨益，强烈推荐，推荐plus！！！！！

物联网安全！

别人的笔记，借花谢佛

了解Nginx的很好的资料

Javascript教程--从入门到精通【完整版】.pdf 文件小，内容全，赞！

高性能网站建设指南 中英文对照，前端网页设计进阶必备宝典

java快速入门，带源代码，感觉是入门和平时查阅不错的教材

linux介绍资料，介绍通俗易懂，内容详尽 适合快速入门，平时翻阅

专业的ssl技术介绍资料 The SSL (Secure Socket Layer) protocol and its successor TLS Transport Layer Security) can be used to secure applications that need to communicate over a network. OpenSSL is an open source library that implements the SSL and TLS protocols, and is by far the most idely deployed, freely available implementation of these protocols. OpenSSL is fully featured and cross-platform, working on Unix and Windows alike. It's primarily used from C and C++ programs, but you can use it from the command line (see Chapter 1 through Chapter 3) and from other languages such as Python, Perl, and PHP (see Chapter 9).