missing-semester-2020:和

Lecture Homepage: 将指令的输出作为变量的值 {} 括号拓展 ? * 字符匹配 diff 指令 使用环境变量 (PATH environment variable) 来解析脚本 find 指令 (or fd) grep (or ripgrep, rg) history, ctrl + R fzf (conmand-line fuzzy finder) 3. vim 5 modes command-line mode movement in normal mode selection in normal mode visual mode commands edit commands count with minipulation modifiers vim extensions 4. Data Wrangling ssh run command regex sed: stre