# how to filter certain files with a particular content

**URL:** <https://community.mp3tag.de/t/how-to-filter-certain-files-with-a-particular-content/17361>\
**Category:** Support\
**Created:** [November 7, 2015, 12:56pm UTC](https://community.mp3tag.de/t/how-to-filter-certain-files-with-a-particular-content/17361 "2015-11-07T12:56:19Z")\
**Posts on this page:** 5\
**Page:** 2

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**Author:** ![evergreen1](https://community.mp3tag.de/letter_avatar_proxy/v4/letter/e/a9adbd/32.png) [@evergreen1](https://community.mp3tag.de/u/evergreen1)\
**Post date:** [November 10, 2015, 3:08pm UTC](https://community.mp3tag.de/t/how-to-filter-certain-files-with-a-particular-content/17361/21 "2015-11-10T15:08:13Z")

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> [@DetlevD](#):
>
> Filter: **TITLE MATCHES "^.{30,40}$"**  
> ... or ...  
> Filter: **("$len(%TITLE%)" GREATER 29) AND ("$len(%TITLE%)" LESS 41)**
> 
> DD.20151110.1318.CET

thanks a lot for the suggestion. it works.

so we have made a count of characters of each records.

Now I want to get all the records' TITILE with 30 characters.a regexp to del all the characters in the title over 30

Is it possible to ask mp3tag to get all the records' title with 30 characters?

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**Author:** ![stevehero](https://community.mp3tag.de/user_avatar/community.mp3tag.de/stevehero/32/337_2.png) [@stevehero](https://community.mp3tag.de/u/stevehero)\
**Post date:** [November 10, 2015, 3:17pm UTC](https://community.mp3tag.de/t/how-to-filter-certain-files-with-a-particular-content/17361/22 "2015-11-10T15:17:12Z")

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**Author:** ![DetlevD](https://community.mp3tag.de/user_avatar/community.mp3tag.de/detlevd/32/123_2.png) [@DetlevD](https://community.mp3tag.de/u/DetlevD)\
**Post date:** [November 10, 2015, 4:21pm UTC](https://community.mp3tag.de/t/how-to-filter-certain-files-with-a-particular-content/17361/23 "2015-11-10T16:21:34Z")

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> [@evergreen1](#):
>
> ... Now I want to ... del all the characters in the title over 30 ...

Action "Format value"  
Field: TITLE  
Formatstring: **$left(%TITLE%,30)**  
... or if you also want to trim possible trailing white space ...  
Formatstring: **$trimRight($left(%TITLE%,30))**

DD.20151110.1820.CET

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<div class="post-metadata">

**Author:** ![evergreen1](https://community.mp3tag.de/letter_avatar_proxy/v4/letter/e/a9adbd/32.png) [@evergreen1](https://community.mp3tag.de/u/evergreen1)\
**Post date:** [November 11, 2015, 8:22am UTC](https://community.mp3tag.de/t/how-to-filter-certain-files-with-a-particular-content/17361/24 "2015-11-11T08:22:15Z")

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> [@DetlevD](#):
>
> Action "Format value"  
> Field: TITLE  
> Formatstring: **$left(%TITLE%,30)**  
> ... or if you also want to trim possible trailing white space ...  
> Formatstring: **$trimRight($left(%TITLE%,30))**
> 
> DD.20151110.1820.CET

thanks a lot for the suggestion. it works.

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<div class="post-metadata">

**Author:** ![system](https://community.mp3tag.de/uploads/default/original/2X/c/ce7035d426cb755a7916793326d23b465222a407.png) [@system](https://community.mp3tag.de/u/system)\
**Post date:** [February 9, 2026, 12:25pm UTC](https://community.mp3tag.de/t/how-to-filter-certain-files-with-a-particular-content/17361/25 "2026-02-09T12:25:56Z")

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Closed on February 9, 2026, 12:25pm UTC



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