I am trying to extract a nameserver. The format of $output is such that it contains ns1.nameserver.com for example.
Consider the following string: ABC. I would like to capture the following groups using a regula开发者_开发知识库r expression:
Let\'s say I have a regex expression foobar and I want to find all lines in a document that contain no match to foobar.Can I do this?开发者_如何学运维How do I do this?^(?!.*foobar.*).+$
This is the fourth part in a series of educational regex articles. It show how the combination of nested reference (see: How does this regex find triangular numbers?) to "count" within asse
This is the third part in a series of educational regex articles. It follows How does this regex find triangular numbers? (where nested references is first introduced) and How can we match a^n b^n wi
Here\'s a string that I may have: 开发者_如何学Go(MyStringIsOneWholeWord *) I have used the following javascript regular expression to get the text after the bracket if it starts with My.
As a personal learning exercise, I wrote this regex to split a unary string int开发者_开发百科o parts whose length is increasing powers of two (see also on ideone.com):
I have the following regex in a C# program, and have difficulties understanding it: (?<=#)[^#]+(?=#)
I found these things in my regex body but I haven\'t got a clue what I can use them for. Does somebody have examples so I can try to understand how they work?
I have the following regexp: (?P<question>.+(?<!\\[\\[)) It is designed to match hello world! in the string hello world! [[A string typically used in programming examples]]
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