为什么grep不能在单词边界处匹配正斜杠(例如，来自'./foo/bar/baz'; import baz的`/baz`?)? [英] Why doesn't grep match a forward-slash at word boundaries (e.g. `/baz` in `import baz from './foo/bar/baz';`)?

问题描述

在我的项目中，我试图匹配包含"/baz"的文件.因此，我执行以下操作:

In my project, I'm trying to match files that contain "/baz". So, I do the following:

grep -rnw . -e "\/baz"

输出正确匹配以下实例:

The output correctly matches the following instance:

import { baz } from './baz';

但这似乎与这一行不匹配:

But it does not seem to match on this line:

import { baz } from './foo/bar/baz';

但是如果我在"bar\/baz"上grep，它确实匹配.发生了什么事?

It does match if I grep on "bar\/baz", however. What's going on?

推荐答案

在您的grep调用中放弃-w自变量.在grep帮助中:

Ditch the -w argument from your grep call. From grep help:

-w，--word-regexp强制PATTERN只匹配整个单词

-w, --word-regexp force PATTERN to match only whole words

因此，只有当它是一个完整的单词时，它才会与您的模式匹配(由单词边界包围，例如点，空格，行的开头/结尾...)

It will, therefore, match your pattern only if it's a whole word (surrounded by word boundaries such as a dot, whitespace, begin/end of the line...)

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