regex Questions

General solutions to replace string regex preceded and followed by 'n' – CentOS

October 31, 2020
Jonathan Zhou
2 Answers

I have a file in CentOS which looks like following [root@localhost nn]# cat -A excel.log real1$ 0.5^I0.5^I0.5^I1^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I^I0.5^I0.5^I0.5^I1^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I^I0.5^I0.5^I0.5^I1^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I$ real2$ 0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I^I0.5^I0.5^I0.5^I1^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I^I0.5^I0.5^I0.5^I1^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I$ real3$ 0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I1^I0.5^I0.5^I0.5^I0.5^I^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I1^I0.5^I0.5^I0.5^I0.5^I$ real4$ 0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I1^I0.5^I1^I0.5^I0.5^I0.5^I1^I0.5^I0.5^I0.5^I0.5^I$ real5$ 0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I1^I0.5^I0.5^I0.5^I0.5^I^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I1^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I0.5^I1^I0.5^I0.5^I0.5^I1^I0.5^I0.5^I0.5^I0.5^I$ real6$ I would like to replace nreal[2-6]n with ttt' and have tried unsuccessfully the following…

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Linux sed join blocks of lines – CentOS

October 30, 2020
Jonathan Zhou
3 Answers

I have these in a file under CentOS: real1 0.5 0.5 0.5 1 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 real2 0.5 0.5 0.5 1 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5…

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Linux CentOS sed command with regex issues

October 30, 2020
Jonathan Zhou
2 Answers

I have a txt file under CentOS in which I want to replace any "tn" with "tt". I tried this: sed -i -E 's/tn/tt/g' myfile.txt but it doesn't work. I don't know if CentOS doesn't support regex in sed. Any…

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Removing substring in string using python? – Telegram API

October 26, 2020
someNameJustToAnswer
2 Answers

Have a string containing this ud83dude80 ud83cudfb0 ud83dudd25 like sub-strings all of them start from ud83 (telegram emoji) and have different 7 characters after 3 so trying to remove them with text = re.sub(r'\ud83w{7}', '', text, flags=re.MULTILINE) with no success…

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.htaccess to pass parameters and remove the page name – Apache

October 26, 2020
Abdul Rahman
2 Answers

I have the following folder structure in my website: example.com/ reports/ causelist/ final_causelist.php I have a link / URL to the final_causelist.php page is as: http://example.com/reports/causelist/final_causelist.php?wb_sno=23&dated=2020-10-26&j_names=Mr.+ABC I want to access the page like the following: http://example.com/23/2020-10-26/Mr.+ABC For the above, I…

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.htaccess rewrite: Remove parameter from url – Apache

October 22, 2020
Pragna
2 Answers

I want to create subdomain from the first parameter of URL and then remove that parameter. Desired result: http://www.example.com/mystore -> http://www.mystore.example.com For this first I have created virtual host for mystore.example.com Now I am trying to remove this mystore parameter…

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Using htaccess to get rid of /index.php link? – Apache

October 21, 2020
rockstardev
2 Answers

I can open my site like this: www.mysite.com or like this: www.mysite.com/index.php I want to create a htaccess rule that redirects www.mysite.com/index.php to www.mysite.com. But all my attempts have other side effects. I've tried: Redirect index.php home.php RewriteRule ^index.php?$ home.php…

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.htaccess redirect URLs with specific path to 404 and exclude some URLs with the same path as exception – Apache

October 21, 2020
Manish Pareek
2 Answers

I have an application on Codeigniter(3.1.11). Basically, I want a 404 redirect of URLs which have dashboard in URI. Like these: dashboard/foo/bar dashboard/foo-2/bar-2 dashboard/something ... Also, I want to keep some exceptions in redirect rule so, some of the specific…

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How to deny access to a url within htaccess – Apache

October 16, 2020
BruceyBandit
2 Answers

How can I deny direct access to a URL through .htaccess file? The URL for example is www.example.com/course/reset-password The file is located within a course folder and the alternative and all files in that folder can allow direct access with…

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Is this a possible to achieve using regex? – CentOS

October 13, 2020
Nick
2 Answers

Ive got a weird URL giving a 200 status where it shouldn't. It should just give a 404 error. Is there a 404 redirect I can use in htaccess for this? Good URLs look like this www.example.com/this-is-static/anytext or www.example.com/this-is-static/anytext/alsoanytext_123 or…

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