sed \ w字符类不适用于Mac上的替换 [英] Sed \w character class not working with replace on mac

问题描述

当我在OSX上执行此命令时，我希望每个字母都被一个"x"代替，但是没有一个字母被替换:

When I execute this command on OSX, I would expect each letter to be replaced by an "x", but none of the letters are replaced:

$ echo 'a b c' | sed 's/\w/x/g'

输出: a b c

这很好用:

echo 'a b c' | sed 's/[[:alpha:]]/x/g'

输出: x x x

我想念什么?

推荐答案

请注意，Mac上sed的BSD实现不同于其他linux计算机

Please note that the BSD implementation of sed on Mac is different from other linux machines

您可以安装gnu sed.在 Apple Mac OS 上运行以下命令:

You can install gnu sed. Run the following command on Apple Mac OS:

$ brew install gnu-sed

参考: https://www.cyberciti.biz/faq/how-to-use-sed-to-find-and-replace-text-in-files-in-linux-unix-shell/

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