grep 用法 Usage: grep [OPTION]... PATTERN [FILE]... Search for PATTERN in each FILE or standard input. PATTERN is, by default, a basic regular expression (BRE). Example: grep -i 'hello world' menu.h main.c Regexp selection and interpretation: -E, --ext
vim技巧:如何删除/保留文本中特定的行呢? <ol><a href="/ss/ss/www"> show invisibles</a> <a href="/ss/ssg/gg/ff/"> one world one dream</a> 任务1:只保留<a>标签内的标题,而把其他行都删掉:g/re/d 知识点:使用:global与:delete命令 运行一下命令: /\v\<\ /?\w+