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4 changes: 2 additions & 2 deletions notes/Linux.md
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* [孤儿进程](#孤儿进程)
* [僵尸进程](#僵尸进程)
* [参考资料](#参考资料)
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## 前言
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- 命令历史:记录使用过的命令
- 命令与文件补全:快捷键:tab
- 命名别名:例如 ll 是 ls -al 的别名
- 命名别名:例如 ll 是 ls -l 的别名
- shell scripts
- 通配符:例如 ls -l /usr/bin/X\* 列出 /usr/bin 下面所有以 X 开头的文件

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4 changes: 2 additions & 2 deletions notes/正则表达式.md
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* [九、前后查找](#九前后查找)
* [十、嵌入条件](#十嵌入条件)
* [参考资料](#参考资料)
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## 一、概述
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## 五、重复匹配

- **\+** 匹配 1 个或者多个字符
- **\** * 匹配 0 个或者多个字符
- ***** 匹配 0 个或者多个字符
- **?** 匹配 0 个或者 1 个字符

**应用**
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