正则
正则 related cheatsheet collection - 2 quick reference guides. Find fast, copy directly. The essential online command reference for developers and SRE.
sed/awk/grep Cheatsheet - Linux Text Processing Reference
一页速查 Linux 文本三剑客 sed、awk、grep 常用命令，覆盖正则匹配、文本替换、列提取、统计分析和批量处理等 30+ 高频操作。快速查找，直接复制。
Regular Expressions Cheatsheet - Regex Syntax Reference
One-page regex syntax reference covering character classes, quantifiers, anchors, groups & captures, lookahead/lookbehind, common patterns, and flags. For grep/sed/awk/JavaScript/Python. Quick lookup, copy and paste.