Linux命令行shell脚本编程sed-阿里云

《Linux命令行与shell脚本编程大全》第二十一章 sed进阶本章介绍一些sed编辑器提供的高级特性。 21.1 多行命令按照之前的知识，所有的sed编辑器命令都是针对单行数据执行操作的。在sed编辑器读取数据流时，它会基于换行符的位置将数据分成行，一次处理一行数据。有时会需要对跨多行的数据执行特定操作。比如，在数据中查找一个长的短语Li...

《Linux命令行与shell脚本编程大全》第十九章初识sed和gawk 这两个工具能够极大简化需要进行的数据处理任务。 19.1 文本处理能轻松实现自动格式化、插入、修改或删除文本元素的简单命令行编辑。 sed和gawk就具备上述功能 19.1.1 sed编辑器被称为流编辑器。流编辑器会在编辑器处理数据之前预先提供的一组规则来编辑数据流。 sed根据命令来处理数据...

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