21 世纪是信息时代，在信息时代中，每个人都有能力去自由地产生、获取、使用和传递信息。而在信息的获取和传递的过程中，计算机互联网是最重要的载体。随着 21 世纪的到来，计算机互联网也走入了家家户户，成为百姓日常生活中不可或缺的基础设施。而随着网络的普及，与其相关的安全事项自然也成为了一个重要话题。
Earlier today I force-pushed to my repository USTC-RV-Chisel for testing purposes, without noticing that my local ref origin/master is 1 commit behind the actual master on GitHub. My friend pushed his work (1 commit) to it, and now it’s lost.
2019 年春季中科大《数理方程》课程的一道思考题，最高可给总评加 5 分
Supports Wolfram Mathematica 12.0 and 12.1
Linux is the #1 open-source operating system nowadays, and many people are running a Linux distro, such as Ubuntu or Arch. Linux is also the most popular choice for a server OS.
It’s again when I want to find out what packages I have manually installed (or by a script) from the output of apt list, with all output on one line.
Have C or C++ project to build? You may think, “Yeah this is very easy, I’ll just call the compiler to do so”, and yes, let’s take a look at an example.
A quick step-by-step guide for those wanting to get in touch with Ubuntu in a virtual machine with minimal effort. For example, at the start of a semester of Operating System Concepts course.