shell编程正则表达式讲解

正则表达式实战指南

最新推荐文章于 2025-09-01 20:41:25 发布

原创最新推荐文章于 2025-09-01 20:41:25 发布 · 123 阅读

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本文深入探讨了正则表达式的应用，通过一系列实例详细解析了如何使用grep命令进行文本匹配，涵盖了基本语法到高级模式匹配技巧，是学习正则表达式不可多得的实战教程。

正则习题讲解：
1.grep -n ‘the’ test.txt

2.grep  -vn ‘the’ test.txt

3.grep  -in ‘the’ test.txt

4.grep  -n  ‘the|taste’ test.txt

5.grep  -n  ‘00’  test.txt

6.grep  -n  ‘[^g]00’ test.txt

7.grep  -n  ‘[^a-z]00’tset.txt
grep  -n  ‘[^[:lower:]]00’

8.grep  -n  ‘[0-9]’test.txt
grep  -n  ‘[[:digit:]]’ test.txt

9.grep  -n  ‘^the’ test.txt

10.grep -n  ‘^[a-z]’ test.txt
grep  -n  ‘^[:lower:]’ test.txt

11.grep -n  ‘[a-zA-z]’  test.txt

12.grep -n  ‘\.$’ test.txt

13.grep -n  ‘^$’  test.txt

14.grep -n  ‘g..d’ test.txt

15.grep -n  ‘ooo*’ test.txt

16.grep -n  ‘goo*g’ test.txt

17.grep -n  ‘[0-9][0-9]*’ test.txt

18.grep -n  ‘o\{2\}’ test.txt

19.grep -n  ‘go\{2,5\}g’ test.txt

20.grep -n  ‘o\{2,\}’ test.txt