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                [友情鏈接](https://www.cnblogs.com/ginvip/p/6376049.html) **sed** 的使用場合如下: 1.編輯相對交互式編輯器而言太大的文件; 2.編輯命令太復雜,在交互式編輯器中難以輸入; 3.需要執行多個函數才能完成對文件的掃描 ***** **1.文本內容替換巧用** ``` # 將p.php 文件中的所有west替換成north' **** sed -i 's/west/north/g' p.php s :是替換命令; /west/north/ :正則表達式 g :對行進行全局替換 ``` **2.打印命令p** 命令p是打印命令,用于顯示模式緩存區的內容,當選項\-n和命令p同時出現時, sed可打印選定的內容。 ``` sed-n '/north/p' p.php ``` **2.刪除行命令d** ``` sed '/north/d' ceshi.txt ```
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