Git

https://www.runoob.com/git/git-tutorial.html

C

https://www.runoob.com/cprogramming/c-tutorial.html

C++

https://www.runoob.com/cplusplus/cpp-tutorial.html

Python

https://www.runoob.com/python3/python3-tutorial.html
numpy
https://www.runoob.com/numpy/numpy-tutorial.html
matplotlib
https://www.runoob.com/w3cnote/matplotlib-tutorial.html

Shell

https://www.runoob.com/linux/linux-shell.html

Linux

https://www.runoob.com/linux/linux-tutorial.html

Markdown

https://www.runoob.com/markdown/md-tutorial.html

C

https://www.runoob.com/csharp/csharp-tutorial.html

Awk

https://www.runoob.com/linux/linux-comm-awk.html

HTML

https://www.runoob.com/html/html-tutorial.html

CSS

https://www.w3school.com.cn/css/index.asp

正则表达式

https://www.runoob.com/regexp/regexp-tutorial.html