Example General Resource Tools

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Parsing timestamp from Apache Web log file
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 "-" "-" "SI... 2013-02-04, ∼6710🔥, 0💬

Parsing Windows TREE Command Output
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... 2016-06-23, ∼6668🔥, 0💬

Parsing file entries from Windows "dir" command
How to write a regular expression to parse file entries from the output of Windows "dir" command? Here is an example output of the "dir" command: Directory of C:\Windows\System32 01/30/2013 11:44 AM . 01/30/2013 11:44 AM .. 07/13/2009 11:56 PM 0409 01/16/2012 10:13 PM 1033 06/10/2009 04:16 PM 2,151 ... 2013-02-01, ∼5801🔥, 0💬

Capturing request path from Apache Web log file
How to capture the request path 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=100... 2013-02-04, ∼5712🔥, 0💬

Capturing request protocol from Apache Web log file
How to capture the request protocol 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... 2013-02-04, ∼5608🔥, 0💬

Visa credit card number validation
All credit card numbers issued by Visa must start with a 4 and have 13 or 16 digits. For example, 346997719493686 is a valid Visa credit card number. How to write a single regular expression to validate a Visa credit card number described above? Here is the regular expression for Visa credit card nu... 2013-01-22, ∼4923🔥, 0💬

Detecting missing closing parenthesis in program code
How to detect missing closing parenthesis in program code using regular expression? For example, I have the following program code: n = - (LN(1-(B/m)*(r/q))/LN(1+(r/q)) ;Can anyone help? 2013-01-29, ∼4871🔥, 0💬

Capturing response status code from Apache Web log file
How to capture the response status code 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 "-" "-" ... 2013-02-04, ∼4699🔥, 0💬

Capturing response message size from Apache Web log file
How to capture the response message size 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 1024 "-" "-"... 2013-02-04, ∼4633🔥, 0💬

Parsing all elements of URL addresses
How to parse out all elements from URL addresses with a regular expression? Here are URL address examples: ftp://ftp.example.org/ https://login.example.com:5800 /?mode=guest&lang=enhttp://www.google.com:80/api/e xample/submit.php?name=joe#newfile://localhost/c|/WINDOWS/do cument.html#chapter1URL... 2013-02-03, ∼4447🔥, 0💬

Parsing directory entries from Windows "dir" command
How to write a regular expression to parse sub directory entries from the output of Windows "dir" command? Here is an example output of the "dir" command: Directory of C:\Windows 12/15/2012 09:24 AM . 12/15/2012 09:24 AM .. 07/13/2009 11:52 PM addins 01/19/2012 10:48 AM AppCompat 11/29/2012 09:16 AM... 2013-02-01, ∼4361🔥, 0💬

Capturing timestamp from Apache Web log file
How to capture the timestamp 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 - - [15/May/2012:19:21:49 -0400] "GET /features.htm HTTP/1.1" 200 9955 "http://www.abc.co... 2013-02-03, ∼4260🔥, 0💬

US phone number validation
How to perform a validation on US phone numbers using a regular expression? For example, " (021)423-2323 " is an valid US phone number. To perform a validation on US phone numbers, try this regular expression: ^\(?\d{3}\)?[-\s.]?\d{3}[-\s.] \d{4}$ 2013-01-27, ∼4104🔥, 0💬

Capturing fragment id from URL
How to capture fragment id from URL addresses with a regular expression? Here are URL address examples: ftp://ftp.example.org/ https://login.example.com:5800 /?mode=guest&lang=enhttp://www.google.com:80/api/e xample/submit.php?name=joe#newfile://localhost/c|/WINDOWS/do cument.html#chapter1URL ad... 2013-02-03, ∼4038🔥, 0💬

Capturing query string from URL
How to capture query string from URL addresses with a regular expression? Here are URL address examples: ftp://ftp.example.org/ https://login.example.com:5800 /?mode=guest&lang=enhttp://www.google.com:80/api/e xample/submit.php?name=joe#newfile://localhost/c|/WINDOWS/do cument.html#chapter1URL a... 2013-02-03, ∼4015🔥, 0💬

Capturing path name from URL
How to capture path name from URL addresses with a regular expression? Here are URL address examples: ftp://ftp.example.org/ https://login.example.com:5800 /?mode=guesthttp://www.google.com:80/api/e xample/submit.php?name=joe#newfile://localhost/c|/WINDOWS/do cument.html#chapter1URL addresses are wr... 2013-02-03, ∼3987🔥, 0💬

Capturing user agent from Apache Web log file
How to capture the user agent 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 1024 "-" "-" "SID=1000;... 2013-02-04, ∼3947🔥, 0💬

Capturing scheme name from URL
How to capture scheme name from URL addresses with a regular expression? Here are URL address examples: ftp://asmith@ftp.example.org https://login.example.com:5800 /http://en.wikipedia.org/wiki/W WW.html#Historyfile://localhost/c|/WINDOWS/cl ock.aviURL addresses are written in this format: scheme://... 2013-02-03, ∼3914🔥, 0💬

Capturing referer URL from Apache Web log file
How to capture the referer URL 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 1024 "-" "-" "SID=1000... 2013-02-04, ∼3825🔥, 0💬

Finding & characters in HTML document
How to find &amp; characters that are not part of HTML entities in HTML code? The the example HTML code is listed below: a & b c &amp; d a &lt; b c &#8364; d c && d The regular expression to find &amp; characters that are not part of HTML entities in an HTML document ... 2013-02-02, ∼3793🔥, 0💬

Validating Complexity and Length of Passwords
How to write a regular expression to check the complexity and length of passwords with the following requirements: Password must be at least 6 characters long Password must include at least including 1 upper case letter Password must include at least including 1 lower case letter Password must inclu... 2013-01-29, ∼3774🔥, 0💬

Validating Brazilian Postcodes
How to write a regular expression to validate Brazilian Postcodes? For example, 23080-060 is a valid Brazilian Postcodes. Here is the regular expression to validate Brazilian Postcodes: \d{5}-\d{3} \d{5} - 2 digits - - A - \d{3} - 3 digits 2013-01-29, ∼3761🔥, 0💬

Parsing the "To:" field from emails
What would be the correct regex pattern to extract email addresses from a string coming from an email form "To" line, that allows the addresses to be delimited by commas ",", semicolons ";", or spaces? For example, the following "To" line contains 4 email addresses: "Joe Smith" , joe@aol.com; someon... 2013-01-30, ∼3730🔥, 0💬

Parsing header lines of an email message
How write a regular expression to capture all header lines from an email message like this: Return-Path: X-Original-To: test@example.com Delivered-To: test@example.com Message-ID: Date: Thu, 23 Jun 2011 11:26:29 +0200 From: Example Sender To: Example Receiver Subject: Email example Hello Joe, It was... 2013-02-01, ∼3727🔥, 0💬

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Example General Resource Tools