awk sed 学习 - SERP Analysis

https://hep.tsinghua.edu.cn/~orv/teaching/physics-data/pb.pdf

https://zhusas.github.io/2018/08/06/sed%25E5%2592%258Cawk%25E7%259A%2584%25E8%25AF%25A6%25E7%25BB%2586%25E7%2594%25A8%25E6%25B3%2595/

https://www.reddit.com/r/learnprogramming/comments/13ngtqd/learning_awk_sed_and_grep_beginner_with_linux/%3Ftl%3Dzh-hans

https://www.cnblogs.com/along21/p/10366886.html

https://linux.vbird.org/somepaper/20090427-learn_sed_and_awk.pdf

https://zhuanlan.zhihu.com/p/110983126

https://blog.csdn.net/qq_56440330/article/details/142580014

https://learnku.com/docs/sed-and-awk-2nd-edition/introduction2/14033

https://www.aliyun.com/sswb/680750.html

https://labex.io/zh/tutorials/linux-text-processing-and-regular-expressions-18003