递归多行 sed - 删除文件开头直到模式匹配
我有包含 html 文件的嵌套子目录。对于每个 html 文件，我想从文件顶部删除，直到模式
find . -name "*.html" -exec sed "s/.*?<div id=\"left-col/<div id=\"left-col/g" '{}' \;
我在终端中得到了大量 html 输出，但没有文件包含替换或被写入。
I have nested subdirectories containing html files. For each of these html files I want to delete from the top of the file until the pattern <div id="left-
This is my attempt from osx's terminal:
find . -name "*.html" -exec sed "s/.*?<div id=\"left-col/<div id=\"left-col/g" '{}' \;
I get a lot of html output in the termainal, but no files contain the substitution or are written.
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您的命令有两个问题。第一个问题是您没有为
sed选择输出位置。第二个是您的 sed 脚本没有执行您希望它执行的操作：您发布的脚本将查看每一行并删除该行上的行将不受影响。您可能想尝试：这还会通过将
.BAK附加到原始版本来自动备份您的文件。如果不希望这样做，请将-i.BAK更改为简单的-i。There are two problems with your command. The first problem is that you aren't selecting an output location for
sed. The second is that yoursedscript is not doing what you want it to do: the script you posted will look at each line and delete everything ON THAT LINE before the<div>. Lines without the<div>will be unaffected. You may want to try:This will also automatically back up your files by appending
.BAKto the original versions. If this is undesirable, change-i.BAKto simply-i.当您想要将
sed正则表达式的结果写入文件时，您将其输出到控制台stdout。要使用 sed 执行查找和替换，请使用
-i标志：如果可能，请确保在执行此命令之前备份文件。否则，您将面临因正则表达式输入错误而导致数据丢失的风险。
You're outputting the result of the
sedregex tostdout, the console, when you want to be writing it to the file.To perform find and replace with sed, use the
-iflag:Make sure you backup your files before performing this command, if possible. Otherwise you risk data-loss from a mistyped regex.
您没有将 sed 的输出存储在任何地方；这就是为什么它会吐出 html 。
You're not storing the output of
sedanywhere; that's why it's spitting out the html.