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Blog: Regular Expression Information Center

A large collection of FAQ, tutorial, how-to and tip for Regular Expression with online testing tools. | URL | Feed
Update: 2017/5/14 20:00:00 (Update)

FYIcenter.com | May 14, 2017

According to the IEEE 802 specification, a MAC address has 6 groups of 2 hexadecimal digits separated by "-" or ":". For example, 0a-1b-3c-4d-5e-6f is a valid MAC address. How to write a single regular expression to validate a MAC address described above? Here is the regular expression for MAC addre... - Rank: 16657; Updated: 2017-05-15 -> Source


FYIcenter.com* | Dec 01, 2016

A free online regular expression test tool that allows to try you regular expression pattern and see the full detailed matching results. - Rank: 5403; Updated: 2016-12-02 -> Source


FYIcenter.com | Jul 05, 2016

Are you having problems using regular expressions when processing text strings in your applications or when editing text files? Welcome to visit this information center, where you can enhance your knowledge on regular expressions; learn how to write and test regular expressions. regex.fyicenter.com ... - Rank: 4631; Updated: 2016-07-06 -> Source


Excrucio | Jun 22, 2016

Regex for parse output of Windows TREE command. For example: Folder PATH listing Volume serial number is 8704-028C C: +---BIOS | \---E0CN23WW | E0CN23WW.exe | +---driveri | 0rww03af.exe | 2tl502af.exe | 2tl602af.exe | 365.10-notebook-win10-64bit-in ternational-whql(1).exe | bob501af.exe | e0cn23ww_i... - Rank: 998; Updated: 2016-06-23 -> Source


FYIcenter.com | Jun 22, 2016

According to the Internet specification RFC 2822, an email address must have a single "@" sign. For example, john@host.net is a valid email address. There should be at least one character before the "@" sign, but the total number of characters before the "@" sign should not be more than 64. There sh... - Rank: 2662; Updated: 2016-06-23 -> Source


FYIcenter.com | Jun 22, 2016

How to match strings that contain neither A nor B using regex? Regular Expression does not support NOT operator on a sub pattern. "Neither A nor B" must be implemented by a "Negative Look-Ahead" assertion. Let's assume that we have following text: Answer is A. Answer is D. Answer is B. Answer is C. ... - Rank: 730; Updated: 2016-06-23 -> Source


Guest | Jun 20, 2016

How to capture the Plukkie Crawler entries from Web log file? Here are some Web log file entries:127.0.0.1 - frank [10/May/2012:13:55:36 -0700] "GET /apache_pb.gif HTTP/1.0" 200 2326 "-" "Mozilla/5.0 (compatible; Plukkie/1.5; http://www.botje.com/plukkie.h tm)""-" 213.135.131.79 - - [13/May/2012:17:... - Rank: 2747; Updated: 2016-06-21 -> Source


FYIcenter.com | May 21, 2015

How to write AND logic in regular expression? How to build a regular expression to identify the following email paragraph as a spam message because it contains the word "bank", "account" and "money"? "I am inviting you for a business deal where this money will be shared between of us in the ratio of... - Rank: 1603; Updated: 2015-05-22 -> Source


Guest | Feb 03, 2013

How to capture the request method from Apache Web log file? Here are some Apache Web log file entries:127.0.0.1 - frank [10/May/2012:13:55:36 -0700] "GET /apache_pb.gif HTTP/1.0" 200 2326 "-" "-" "-" 213.135.131.79 - - [13/May/2012:17:35:32 -0600] "POST /submit.jsp HTTP/1.0" 200 2326 "-" "-" "SID=10... - Rank: 2510; Updated: 2013-02-04 -> Source


Guest | Feb 03, 2013

How to parse timestamp elements from from Apache Web log file? Here are some Apache Web log file entries:127.0.0.1 - frank [10/May/2012:13:55:36 -0700] "GET /apache_pb.gif HTTP/1.0" 200 2326 "-" "-" "-" 213.135.131.79 - - [13/May/2012:17:35:32 -0600] "POST /submit.jsp HTTP/1.0" 200 2326 "-" "-" "SID... - Rank: 2689; Updated: 2013-02-04 -> Source




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