bash 如何使用 SED 查找和替换目标字符串中带有“/”字符的 URL 字符串？
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How to use SED to find and replace URL strings with the "/" character in the targeted strings?
提问by LearnWebCode
I'm attempting to use SED through OS X Terminal to perform a find and replace.
我正在尝试通过 OS X 终端使用 SED 来执行查找和替换。
Imagine I have this string littered throughout the text file: http://www.find.com/page
想象一下，这个字符串散落在整个文本文件中：http: //www.find.com/page
And I want to replace it with this string: http://www.replace.com/page
我想用这个字符串替换它：http: //www.replace.com/page
I'm having trouble because I'm not sure how to properly escape or use the "/" character in my strings. For example if I simply wanted to find "cat" and replace with "dog" I've found the following command that works perfectly:
我遇到了麻烦，因为我不确定如何正确转义或在我的字符串中使用“/”字符。例如，如果我只是想找到“cat”并替换为“dog”，我发现以下命令非常有效：
sed -i '' 's/cat/dog/g' file.txt
Does anyone have any ideas on how to achieve the same functionality only instead of cat and dog have strings or URLs that container the "/" character? I tried many different ways of escaping the "/" characters but then it seems as if SED can no longer "find" the string and it doesn't perform any find & replace actions.
有没有人对如何实现相同的功能有任何想法，而不是 cat 和 dog 具有包含“/”字符的字符串或 URL？我尝试了许多不同的转义“/”字符的方法，但似乎 SED 无法再“找到”字符串并且它不执行任何查找和替换操作。
Any help or tips are greatly appreciated.
非常感谢任何帮助或提示。
Thanks!
谢谢！
回答by Joachim Isaksson
/is not thedelimiter in sedcommands, it's just one of the possible ones. For this example, you can for example use ,instead since it does not conflict with your strings;
/不是命令中的分隔符sed，它只是可能的分隔符之一。对于此示例，您可以例如使用，,因为它不会与您的字符串冲突；
echo 'I think http://www.find.com/page is my favorite' |
sed 's,http://www.find.com/page,http://www.replace.com/page,g'
回答by jaypal singh
sedcan take whatever follows the "s" as the separator. Since you are working with URLit is a good practice to use a different delimiter other than /to not confuse sedwhen your substitution ends and replacement begins.
sed可以将“s”后面的任何内容作为分隔符。由于您正在使用URL它，因此最好使用不同的分隔符，/而不是sed在替换结束和替换开始时混淆。
However, having said that you can definitely use /if you wish too. You just need to escape the literal /.
但是，话虽如此，/如果您愿意，您绝对可以使用。您只需要转义文字/.
So, you can either do:
所以，你可以这样做：
sed 's/http:\/\/www.find.com\/page/http:\/\/www.replace.com\/page/g' input_file
or use a different delimiter to avoid making your cryptic sed more cryptic.
或使用不同的分隔符以避免使您的神秘 sed 更加神秘。
sed 's#http://www.find.com/page#http://www.replace.com/page#g' input_file
