Questions tagged [regular-expressions]
The regular-expressions tag has no usage guidance.
110
questions
0
votes
1
answer
91
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|...
- 1
0
votes
0
answers
54
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
38
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 ...
- 1
0
votes
0
answers
180
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
55
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
245
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
70
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
174
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
205
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
106
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
66
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
63k
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
397
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 &...
- 159
0
votes
1
answer
930
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
233
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
711
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
60
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
463
views
How to remove mass trailing slashes(Nginx)
I need to remove mass trailing slashes, now I have
rewrite ^/(.*)/$ /$1 permanent;
So www.example.com/ becomes www.example.com.
It's good, but when I go to www.example.com/// (any amount of slashes)...
1
vote
1
answer
6k
views
postfix smtp_generic_maps with regular expression
I just started playing around with sender address rewriting with postfix.
I run a server with debian-7.11 and postfix-2.9.6.
Content of /etc/postfix/main.cf:
[...]
smtp_generic_maps = hash:/etc/...
- 83
0
votes
1
answer
7k
views
Ansible replace. Replace part of the regular expresion
I create a playbook that will harden my linux servers. Part of the process is to replace the umask in the default profiles. So, I have created this task:
- name: Change the umask for default profiles
...
- 832
2
votes
2
answers
924
views
Finish processing rewrite directives in location and return 301
I have the following in my nginx.conf:
location ~* /collections.*?products/([^/]+)/?$ {
rewrite ^/collections.*?products/([^/]+)/?$ /$1.html;
rewrite ^([^_]*)_([^_]*)_(.*)$ $1-$2-$3;
...
- 123
1
vote
1
answer
430
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
503
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 ...
- 21
1
vote
2
answers
828
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
192
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....
- 69
5
votes
2
answers
12k
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 ~* \.(...
- 165
-2
votes
1
answer
929
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 ...
- 1
4
votes
2
answers
56k
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
1k
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 (?...
- 713
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
901
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 )
...
- 1,081
0
votes
1
answer
856
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 { ...
- 101
3
votes
1
answer
3k
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 ...
- 2,137
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
499
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 ...
- 325
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....
- 123
0
votes
1
answer
9k
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 ...
- 347
1
vote
1
answer
914
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
3
votes
1
answer
2k
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 / {
...
- 133
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
...
- 23
0
votes
2
answers
911
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
268
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 ...
- 365
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-...
- 131
0
votes
2
answers
3k
views
Zabbix doesn't update value from file neither with log[] nor with vfs.file.regexp[] item
I am using Zabbix 2.2.
I have a very specific environment, where I have to generate desired data to file via script, then upload that file to ftp from host and download it to Zabbix server from ftp.
...
- 398