匹配字符串和一个或多个数字与grep(Match string and one or more numbers with grep)

匹配字符串和一个或多个数字与grep(Match string and one or more numbers with grep)

我有一个文件myfile 。 我想找到包含以下模式的行：

MyWebsite/1234

或者更一般

somecharactersstringswhitespaces MyWebsite / 987 somecharactersstringswhitespaces

MyWebsite之后可以有一个或多个号码。 我试过以下：

grep ".*MyWebsite[0-9]\{1,\}" myfile grep "MyWebsite[0-9]\{1,\}" myfile grep MyWebsite"[0-9]\{1,\}" myfile grep -E ".*MyWebsite/[0-9]\{1,\}.*" myfile

他们都没有工作，即使直觉和逻辑说这应该是好的。

I've got a file myfile. I want to find lines that includes following pattern:

MyWebsite/1234

or more general

somecharactersstringswhitespacesMyWebsite/987somecharactersstringswhitespaces

There can be 1 or more numbers after MyWebsite. I have tried following:

grep ".*MyWebsite[0-9]\{1,\}" myfile grep "MyWebsite[0-9]\{1,\}" myfile grep MyWebsite"[0-9]\{1,\}" myfile grep -E ".*MyWebsite/[0-9]\{1,\}.*" myfile

None of them worked, even if intuition and logic says that should be good.

最满意答案

grep 'MyWebsite/[0-9]\+' myfile应该有效。 在你的前3个正则表达式中，你错过了/和最后一个，你不应该逃过{和} ，但是否则你很好。 尽管使用+而不是{1,}更简洁{1,}但grep默认使用的正则表达式版本（POSIX BRE的变体）要求对其进行转义。

grep 'MyWebsite/[0-9]\+' myfile should work. On your first 3 regexes, you missed the / and on the last, you shouldn't have escaped the { and }, but otherwise you were pretty good. It's more concise to use + rather than {1,} though, and the version of regex that grep uses by default (a variant of POSIX BRE) requires it to be escaped.