Sed表示流编辑器(Stream Editor)的缩写。这是一个简单但功能强大的工具,分析文本,并无缝地转换它。 SED是在1973-1974年由贝尔实验室的李E. McMahon开发。如今,它运行在所有主要的操作系统。

McMahon编写了一个通用的面向行的编辑器,它最终成为sed。sed借用语法和ed编辑许多有用的功能。自成立开始,就对正则表达式有所支持。sed接受来自文件以及管道的输入。此外,它也可以接受来自标准输入的数据流的输入。

sed是自由软件由基金会(FSF)维护,它是由GNU/ Linux分发。因此,它通常被称为GNU sed的。对于新手用户,sed语法看起来神秘。但是,一旦熟悉了它的语法,就可以使用sed的几行脚本解决许多复杂的任务。

sed典型用途

sed可以有许多不同的方式使用,例如:

  • 文本替换

  • 选择性打印的文本文件

  • 一个就地文本文件的编辑

  • 文本文件的非交互式的编辑等等。


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