Also known as regular expression or regexp, a description of a set of strings, often used for searching and validating strings.

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List all regex matches, one per line of output

I know that I can find regex matches using egrep. My need is a bit more esoteric: I need to list all regex matches, one per line of output. So, assume a file containing the following: This is just ...
4
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2answers
70 views

RegEx string formatting in Notepad++

I'm pretty good in RegEx, but there's one thing I can't seem to figure out how it works. How would one search/replace in NotePad++ and make sure that the output has a fixed length, while the input ...
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27 views

Bulk renaming of files in window which matches a certain expression [on hold]

I want to rename all files in a folder in Windows 7. All files which have the last character of the filename as 5, the last character must be replaced with 3. I used the command rename *5.abc *3.abc ...
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1answer
17 views

Adding Single quotes at the beginning and end of each string

I want to add single quotes at the beginning and end of all the strings in the given list and each item should be separated by a comma in notepad++ ANAND GABRIEL INDIA LIMITED NARMAC MOTHER DAIRY ...
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1answer
23 views

Word, Regex for brackets, word, whitespace or lf

In Word, I would like to use the regular expressions to match "Po" followed by either a whitespace or end of line character. [[Policy.PolicyNumber]] [[Po [[Po John So in the above example I would ...
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2answers
29 views

Using Notepad++ Regex to remove anchors

I've tried looking at other answers for this and my brain just explodes when I try and read anything on Regex, I just cant comprehend it, no matter how many times I read it, or how slowly. Im trying ...
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1answer
17 views

Regular expression not working as expected for special characters

I have a Wireshark capture and I'm trying to create a display filter [Wireshark documentation] that finds XML documents which contain the term @@ V? (at-at-space-V-questionmark). The documentation ...
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3answers
63 views

Notepad++ Find and Replace Expert Suggestion

I need help with Find and Replace in Notepad++. Example: $250 'Hello 1' Take '____' $500 'Hello 2' Take '____' $1000 'Hello 3' Take '____' Imagine there are thousands of these entries going up to ...
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2answers
62 views

How to split big txt file \n and not

I want to split a txt file. First I open the txt file with notepad++ and I change from this \r\n to this \n , then I want to split them in 10 pieces and for that I use a tool called split or join and ...
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1answer
22 views

Regex positive lookahead when lookahead data doesn't exist (PCRE)

I'm trying to match out a string which will have a format similar to the following: username=joe password='this! is a password with "quotes" and spaces#913 custom1 customd afd weirdhuh? custom1=...
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15 views

start scanning from next page number (incrementing page numbers of files)

I am scanning a couple of my notes. The are saved as note1.jpg,note2.jpg,note3.jpg and so on the scanning happened smoothly till note48.jpg, some how some thing at this instant went wrong and then now ...
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46 views

lnav not recognizing our logs. Custom format not seeming to be applied.

I am working on adding a lnav format to parse the logs of my companies java application. I am running into difficulty getting lnav to recognize them. Here is what my json format file looks like so far:...
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2answers
14 views

Find highest numbered files in directory

Scenario: A backup system creates rar archives and splits them in 100 MB parts. I would like to find the highest numbered files within this directory. For example in- and output: Input: ...
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2answers
37 views

bash regex for a file name

I'm really not that good with regex but I thought I'd be able to pull this off since it's not that difficult. I'm using find to see if any file that matches the regex exists in that dir. The string ...
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1answer
28 views

limiting regex search range

I have a long list of words, characters, and new lines, how do tell the regex to only search the text between TWO EXACT WORDS on the list? This is what I came up with but it does NOT stop searching" ...
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1answer
21 views

Regular expressions in procmail

I have a problem with backscatter to randomly generated fake-from-adresses on a domain with a catchall. The fake-alias is using a scheme, using egrep with the regexp ^To:.*.[A-Z].[a-z].*[A-Z].[a-z].*...
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2answers
18 views

Adding specific line after findinga pariticular line

I have huge codebase containing 400-500 files. In most of the files we have this kind of lines, <cfcatch type="any"> / <cfcatch type="database"> / <cfcatch> etc. So the common ...
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1answer
35 views

Regex between two patterns that matches only the first occurence of the second pattern

I have the following text: 676 ##$a610$v22 <coded_13></coded_13> 700 #1$3184149134rtrtrtrtrtrtrtrt$4210 <coded_27></coded_27> ILeclerc, Michel (1952-....) <coded_27><...
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1answer
39 views

Batch: Return the matching lines from pipe's output to the console with regex

I have the following domain checking bash script in Linux: #!/bin/bash TLD='.com' while read -r domain; do whois -H $domain$TLD | grep -oPaq '^.*(Creation Date|record created).*$' if [ $? -eq 0 ...
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19 views

Efficient Find/Replace Heading in MS Word that Contains text

I have multiple Heading 3s in MS Word. Some of them contain specific text: "MYTEXT". I want to find all Heading 3s that include "MYTEXT" and remove that word and all text to it's left while ...
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11 views

Regex: Define multiple whois servers for a single TLD in whois.conf

A single TLD is defined by this way in whois.conf for GNU whois: # whois configuration file # # This file can contain details of alternative whois servers to use if # the compiled in servers are not ...
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2answers
24 views

I need help building a regex for a grep to show only the path to running versions of java

I need help building a grep from ps -ef to return only java paths. Say we have the following runnning process: bash> ps -ef | grep java user pid# 1 1 00:00 ? 00:04:00 /path/to/java/...
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1answer
19 views

Can I use grep to pull out a particular pattern from a file / number of files, using regex perhaps?

I have a file with a load of errors in it. I used grep to pull out all the JSONExcpetion Errors and save them in a new file like this: sudo grep -Hrn "JSONException" 2016-* >> jsonexception.txt ...
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18 views

regexp search and replace for bash variables

A number of my bash scripts need tidying up before sending them round. One of the thing I would like to do is to use curly braces for all variable names. So everywhere it says $PWD should be changed ...
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1answer
18 views

RegEx with Word 2013. Match string AFTER known word to End of Line or <table>

I'm using the Find and Replace feature in a large word document I have. I need to find the word REMARKS: (all bold and upppercase). REMARKS: THIS IS SOME IMPORTANT DATA At then end of that line ...
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2answers
87 views

Extracting named groups of regular expression in LibreOffice Calc

In Python 3, it is quite easy to extract text from named groups as shown in the following example: import re myStr = r"4000/2000/5000/7000" reObj = re.compile(r"""(?P<g1>\d+) # a capturing ...
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3answers
41 views

Notepad++ regex not working

I am trying to use Notepad++ and regular expressions to remove all XML from Windows' events. My regular expression is as follows: Event Xml:(.|\n)+?Event>\n Example Windows events are as ...
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2answers
35 views

How can I delete everything else from my txt except hungarian texts?

I have a localisation file from a game, and unfortunately, this file conain all localized language, but I only need is, the hungaryan texts from them. I would like to make a video series from this ...
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16 views

Automatically Monitor and Rename Files with Regex

Is there a tool that allows you to monitor a folder for new files and apply a regular expression to automatically rename the files?
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10 views

Possible to use RegEx and Notepad++ to compress repeated words to word counts

I would like to use NotePad++ Find and Replace with RegEx to essentially compress data in a text file. I have data which contains repeated adjacent words such as: [dog][cat][cat][dog][cat] I would ...
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14 views

How to find & replace a pattern with string in ruby?

My file is: [root@test etc]# cat nrpe.cfg command[check_users]=/usr/local/nagios/libexec/check_users -w 30 -c 35 command[check_load]=/usr/local/nagios/libexec/check_load -w 15,10,5 -c ...
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1answer
23 views

Bash Regex oddity when using =~ operator

Consider this code: s1="1,2,3,4"; \ s2="1,2,3"; \ sP='^(([1-9][0-9]{0,},){1,2}){1,2}$'; \ [[ "${s1}," =~ $sP ]] && echo "\$s1 matches"; \ [[ "${s2}," =~ $sP ]] && echo "\$s2 matches,...
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34 views

JFlex: multiline string literal (multiline bash commands)

I use JFlex to describe a file format. It uses a literal string to describe the multi-line commands (as in bash). I do so: STRING_LITERAL= "\"" ([^\"])* ("\\\n"|"\"")? Text example: CMD "git ...
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14 views

Which of the following use of anchor is correct in regex using grep?

Both of the below commands gives the same output, however which one is the correct method to use it? grep ^'\<that\>' file.txt Searches for the line which has that as the first word grep '^\&...
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34 views

fail2ban does not ban IP although there is one failed regex in table

I don't know why fail2ban not adding the bad ip into iptables rules. Here is my setup. /etc/fail2ban/filter.d/http-get-dos.conf [Definition] failregex = ^<HOST> -.*\"(GET|POST).* ignoreregex = ...
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Notepad++ If a line contains a word replace line a certain distance below with a phrase

I'm pretty sure this is possible, and I think it involves Regex, but I have no clue how regex formatting works, and I haven't been able to find the expression I'd need anywhere yet. Basically I've ...
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14 views

How to use RegEx modifiers within Ultraedit?

I'm looking for using regex modifiers like (/g global, /s single line, ...) on UltraEdit. I want to use them when applying Find/Replace on my files using UltraEdit. Note: I'm using UltraEdit for ...
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7 views

Pattern finding application that generates regex?

I am building rule sets to recognize weak passwords, to do this quicker, I am thinking I will take a cracked password word list from https://hashkiller.co.uk/downloads.aspx and run it through a ...
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31 views

Disable emoji icons in Chrome?

I want to disable emoji in Chrome, or replace them with something else (not for any particularly deep reason - figured it'd be amusing). I'm using an extension called Word Replacer II, which allows ...
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2answers
32 views

Notepad++ RE Search and Replace

Can someone explain why the following record: 1234 4567 blahblahblah becomes blahblahblah When Search/Replace applied (NP++ v6.9) with: Replace:^\d{4}\h with:(nothing) (Reg Exp) radio on Any ...
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1answer
30 views

How to find wild card value and append to it

I have part of the hundreds of lines similar to : [vc_single_image image="55"] How can I change the lines so they all get appended img_size="full", resulting in [vc_single_image image="55" ...
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9 views

.htaccess to hide 2 possible directories

I am having difficulties getting the second statement working regarding admins, i am trying to hide both new and admin parts of the directory. new seems to be hiding fine however admin doesnt want to ...
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1answer
57 views

Dreamweaver Regex - Unmatched ) in regular expression

The Issue The issue I am tackling is that past developers of some code I am working on set variables like $_GET[name] or sometimes like $_GET['name']. Trying to make the code uniform, I want to make ...
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20 views

Dreamweaver REGEX trying to find and replace (or remove)

So far am using this: "http([^>]+) as my REGEX. The page has multiple urls mixed with text and DOM Elements. Something like: <li><a href="http://www.uen.org/toolbox">UEN's Teacher ...
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1answer
56 views

How To find a word and replace with changing pattern

I have a text like the following: case "UID": if (!Convert.IsDBNull(objDataReader["XYZ"])) { objQualitativeAssessmentBiz.XYZ = objDataReader["XYZ"].ToString(); } break; case "GeneratedChaseId": ...
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44 views

Notepad ++ - How can I replace a line using a column from next line

So the problem is that, I have a really huge file of clients and I need to do this: example1.1@hotmail.com example1@hotmail.com;12345 Became this: example1.1@hotmail.com;12345 ...
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1answer
65 views

exclude specific strings of words using wildcards

I cannot seem to come up with the appropriate wildcard (I suppose it must be [!]) which would exclude from the expression argument[oales]{1,4} the following three words argumentos argumenta ...
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2answers
86 views

Notepad++ - replace every first space of a line

I know there are a lot of these types of questions but I can not find a way to alter one of the existing solutions for my problem. My text file looks like this: word<tab>word<space>...
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35 views

Replace using Regex in Notepad++

I want to replace every occurrence between <fb:like href= and </fb:like> in notepad++. I know I can do this with Regex, but i tried for a couple of hours in vain. I have to do this in a ...
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29 views

Regular Expressions: Assertions

I would like to know what the definition for an assertion is in the context of regular expressions. If anyone should know, please enlighten me with a brief definition of what it actually is. I would ...