Questions tagged [regular-expressions]
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111 questions
1 vote
1 answer
90 views
Apache redirect http to https except localhost
I know that there are several similar questions, but after many tests I am not able to get what I want. First of all, I read that apache can redirect in three ways: redirect, mod_rewrite or with if-...
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1 vote
1 answer
402 views
Regexp in Apache 2.4 when used in HTTP_USER_AGENT var
I need to work with some user-agents in Apache 2.4. I googled a lot for examples, tried a million regex options, and it still doesn't work: <If "%{HTTP_USER_AGENT} == '/^.*(Google|bing|Windows|...
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0 votes
0 answers
793 views
Sudo validates command line arguments via regular expression incorrectly
Let's say we have two users: alex and alexa. We want to allow alex to execute htop as root in order to see disk usage stats, but we do not want them to see other users' processes which root can do. ...
- 1
0 votes
1 answer
99 views
Regular expression does not work in EMEditor
I have a simple Regular expression to select all text between X-Mozilla-Status and [Chat Info]. I tried it at https://regexr.com/, and it all works great. However, it can't find anything if I add it ...
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0 votes
0 answers
219 views
Testing Regular Expressions
I am trying to learn regular expressions, and came across some examples online. Trying to put things together, I inputted this into bash ^(([a-j][a-j]?)|(3[a-j][a-j])$ It returns the following error ...
- 1
0 votes
1 answer
134 views
Postfix test: I can't forwarding outgoing emails
I am configuring a Postfix server in a test environment. It can only forward local emails. Outbound email must be redirected to /dev/null or to a local account. I found a solution on your forum but it ...
- 1
0 votes
1 answer
368 views
Postfix header_checks add X-Mailgun-Tag
I am trying to add in the postfix header_checks, using PREPEND, some X-Mailgun-Tag headers. When using the following expressions in the header_checks, it applies without issues to all domain emails. /^...
0 votes
0 answers
114 views
Regular expression for location with slash at the end
I have location location ~ /(apple|club|car|fly|fitness|nivea|nesquik) { alias /srv/static-pages/$1.html; } I tried location ~ /(apple|club|car|fly|fitness|nivea|nesquik)(\/)* { alias /srv/...
0 votes
1 answer
235 views
Regular Expression in EMEditor
I am trying to make a simple find > replace regular expression. This does work fine in https://regexr.com/ to find this comment below. However the editor I use is EMEditor that i try to make a find ...
- 1
0 votes
1 answer
231 views
Nginx isn't passing on the last forward slash of an arg to a script
Have an issue where nginx isn't passing on the last forward slash of an arg to a script Example https://xxxx.com/test_t/company/Default/icon_category/Hotel.png Rewrite: location / { rewrite "^/(...
- 1
0 votes
1 answer
149 views
Find and Replace using Regular Expression
I try to find a way to find and replace using EMEditor and a Regular Expression. I try to applu this for the item below: <?php /*f04b8*/ @include "\057mn\164/r\141id\057ho\155e/\164ap\151om\...
- 41
0 votes
1 answer
87 views
Regular expression to find content that is sandwitched between 2 symbols
This might have been asked before but I cant find a solution. I am looking for a simple "Regular Expressions" search pattern to find something in my PHP files. I am looking for the following ...
- 41
8 votes
1 answer
84k views
Extracting part of the string using Ansible regex_search and save the output as a variable
I'm having a content like below inside a file. dataDir=/var/lib/zookeeper 4lw.commands.whitelist=mntr,conf,ruok,stat syncLimit=2 I wanted to read the value for dataDir using Ansible and set it to a ...
- 213
0 votes
2 answers
491 views
Find with regex not working on CentOS 7 [closed]
I have problem with find and regular expression. I would like to find files in /etc, which name begin of a or b. I tried this commands: find /etc -type f -regex '^a' find /etc -regextype sed -regex &...
- 199
0 votes
1 answer
1k views
Why my Fail2ban regex doesn't find matches?
I have tried many regular expressions in fail2ban config, but it never return any matches. Line example: [2019-12-10 10:45:38] NOTICE[15077] res_pjsip/pjsip_distributor.c: Request 'INVITE' from '<...
1 vote
0 answers
1k views
Postfix header_checks not working: Invalid preceding regular expression
I have a problem with Postfix. Recently we are receiving mail messages with malformed "From:" headers as these: From: "Name Surname <[email protected]>" <[email protected]> From: "...
0 votes
1 answer
304 views
fail2ban filter for ical regex
i am trying to get a regex for an ical service on my host working without success. This is a part of the logfile: Tue Jul 23 13:55:23 2019: ical|T720] [info ] Accepted connection from [::ffff:2.3.4....
- 3
2 votes
5 answers
7k views
cron expression to execute on the "second last working day" of the month
I need your help to contruct a cron job to run the second last working day of every month. I can do LW as shown below but i am not sure how to do second last. I need your help and advise here please. ...
- 31
1 vote
2 answers
1k views
regular expression that has /admin in the middle and whole string ends with specific format
I am trying to write a regular expression such as it has /admin in the middle and ends with .css or .js or other formats. http://example.com/admin/static/style.css (SHOULD WORK) http://example.com/...
- 111
0 votes
0 answers
78 views
Add rule in .htacces only if domain name begins with <regular-expression>
I have to add a rule in a server that host many sites. This rule must be added only in those .htaccess files that belongs to a site with domain beggining with "dev-" or "review-". I have this: #!/...
2 votes
1 answer
614 views
How to remove mass trailing slashes(Nginx)
I need to remove mass trailing slashes, now I have rewrite ^/(.*)/$ /$1 permanent; So www.example.com/ becomes www.example.com. It's good, but when I go to www.example.com/// (any amount of slashes) ...
3 votes
1 answer
8k views
postfix smtp_generic_maps with regular expression
I just started playing around with sender address rewriting with postfix. I run a server with debian-7.11 and postfix-2.9.6. Content of /etc/postfix/main.cf: [...] smtp_generic_maps = hash:/etc/...
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0 votes
1 answer
9k views
Ansible replace. Replace part of the regular expresion
I create a playbook that will harden my linux servers. Part of the process is to replace the umask in the default profiles. So, I have created this task: - name: Change the umask for default profiles ...
- 852
2 votes
2 answers
1k views
Finish processing rewrite directives in location and return 301
I have the following in my nginx.conf: location ~* /collections.*?products/([^/]+)/?$ { rewrite ^/collections.*?products/([^/]+)/?$ /$1.html; rewrite ^([^_]*)_([^_]*)_(.*)$ $1-$2-$3; ...
- 123
1 vote
1 answer
498 views
Modify puppet nodes.pp with regex based on network (facter) subnet coverage - needs peer review
For the puppet experts out there, I am trying to modify my node.pp based on the facter network. Example, I would like to have subnets 10.10.10.0 through 10.10.10.255 and 192.168.2.0 network to get the ...
- 11
2 votes
1 answer
635 views
Multi-line PCRE w\ lookhead, count matches
I am trying to perform a regex that matches if both the word cat AND dog are in the regex with multi-line support matches cat asdjfaldsfj dog #### does NOT match cat adfasdf8989 #### matches dog ...
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1 vote
2 answers
910 views
Regex works everywhere ( tried regex101 and regstorm.net) except Powershell
I have tried various different combos and already checked other similar posts, but can't find my answer. I have a .config file and I need to exclude the comments from the file when I do my search, ...
- 33
-1 votes
1 answer
225 views
validate file content with bash Regular Expressions + Linux
how to validate the following file content that should be include single integer/float number by bash Regular Expression or any other idea with awk/sed cat /var/VERSION/Version_F35_project_usa 2....
- 79
6 votes
2 answers
15k views
nginx: multiple matching location blocks
I try to set max-age header directive and Content-Disposition "attachment" as follows: location / { # set up max-age header directive for certain file types for proper caching location ~* \.(...
- 175
-2 votes
1 answer
1k views
Sed replace path for directory from special file with delimirers slash
i should change on parameter to other from template file in linux. sed -e "s/\${dir}/<in this place i should input path, like /home/username>/" /etc/nginx/site.conf But it does not work. How to ...
- 1
4 votes
2 answers
61k views
Redirect of all the URLs that contain 1 word in specific, but that do not contain other words
I am migrating my website to another platform, but while I finish developing all the pages of the new website, I need my users to navigate between the 2 platforms. So I need to make a 301 redirect of ...
- 241
0 votes
3 answers
2k views
Logstash Grok Parsing Failed
I need to match this entry 2015/10/30 23:58:21 pid 22223 [email protected] 192.168.0.1 [p4/2012.2/LINUX26X86_64/536738] 'test-monitor show' To match this I wrote this Regex P4_DATE (?&...
- 723
0 votes
2 answers
2k views
Regular expression for second and third domain level with hyphens
I have some smart script, that check name of server and get domain name. For example, i have name of server: example.ru01. I need to get: example.ru My scipt: #!/bin/bash hostname=example.com01 echo ...
0 votes
2 answers
1k views
Doesn't work regular expression for domain with hyphens
I have some smart script, that check name of server and get domain name. For example, i have name of server: example.ru01. I need to get: example.ru My scipt: #!/bin/bash hostname=example.com01 echo ...
2 votes
1 answer
1k views
postfix virtual map regular expression
I am trying to create a small virtual_alias_maps fiel for postfix-pcre: .*@subdom\.domain\.com [email protected] But I get this error: warning: pcre map /etc/postfix/virtual, line 1: unknown regexp ...
user219962
1 vote
1 answer
1k views
Nginx rewrite rule remove subfolders
I'm trying to setup a nginx rewrite rule but can't figure out how to get it working. I want to redirect all urls https://domainname.com/archives/year/month/date/postname to https://domainname.com/...
- 88
-1 votes
1 answer
941 views
sed + replace value default in grub.conf [closed]
I want to change the default value on all machines to default=0 default value could be any integer number how to set in the sed syntax that default could be any number my example ( not working ) ...
- 1,141
0 votes
1 answer
888 views
nginx location regex not working
I'm trying to setup location directive to match my request but can't get it working. Below is my sample request: /APP/public/api/v1/item/100/type location ~* ^/APP/public/api/v1/item/(.*)/type { ...
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3 votes
1 answer
4k views
How can I add values to structured data with rsyslog?
Our logs are sent from our applications to rsyslog running on the same host. Rsyslog then forwards the messages to Sumo Logic. We need to add some metadata to our log messages in the structured data ...
- 2,207
2 votes
3 answers
4k views
Regular expression in not working in dnsmasq config
I have dnsmasq version 2.66 installed on CentOS. As per release notes, dnsmasq supports regular expressions starting 2.60 I have following enty in my config file: address=/:clients[0-9]*\.google\....
- 267
1 vote
1 answer
512 views
Exchange 2013 RegEx transport rule
I am looking to create some transport rules for outgoing email based upon AD properties. eg. Phone: 123-456-7890 Where the actual inserted code looks like "Phone: %%PhoneNumber%%", retrieving the ...
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1 vote
1 answer
3k views
Nginx Config Location Regex With Language Code In Url
Trying to achieve constant language code in url's 1st segment with nginx regex location configuration and could not find the correct syntax. Necessary result: example.com stays example.com example....
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0 votes
1 answer
11k views
regular expression to match condition of character if exists should always be followed by a pattern
I need a regular expression with the condition that ..if there is an occurrence of character | one time ;the pattern immediately following is ARGS or URL For example abcd ab|ARGS cd|URL etc is valid ...
- 347
1 vote
1 answer
1k views
Nginx proxy for CNAME setup
My application serves landing pages and we need users to custom CNAME it eg: {{userdomain}}.myapp.com/{{pageid}} serves the landing pages today. User wants to map it to {{landing}}.theirsite.com So,...
- 111
4 votes
1 answer
3k views
Adding Curly Braces to Map block in nginx
I am having a problem trying to get the following configuration to work. Every time I run the config test I get a failed pass. To start off let me show you a working configuration location / { ...
- 143
1 vote
1 answer
2k views
How to using sed to change the last character from a match line
How to using sed to change the last character from a match line ? Exemple: /etc/network/interfaces auto eth0 iface eth0 inet static address 150.0.3.50 netmask 255.255.255.0 ...
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0 votes
2 answers
1k views
How to escape pipeline char in Windows shell?
I need to specify a regular expression that includes | character to findstr command: processtext.exe | findstr /R "Hello|Bye" How do I escape it? \| does not work. Quotes fix issue with pipelining ...
- 135
0 votes
1 answer
372 views
Manage several sub domains with nginx
I like to handle different sub domains in my Nginx server, this is my config file (partially) server { listen 80 default_server; listen ...
- 415
0 votes
2 answers
2k views
How to exclude a certain string in a search pattern
There are several exception messages in catalina.out file of tomcat server just like - java.lang.NullPointerException org.springframework.beans.factory.BeanCreationException java.lang....
1 vote
1 answer
1k views
htaccess rule for url not ending with certain words
I need to rewrite few urls if those url not ending with certain words. For example, i need to rewrite following url /category1/subcategory1/aproduct-url-title to /category1/fixedword/aproduct-url-...
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