# Purpose of pipeline.js in filebeat module

**URL:** <https://discuss.elastic.co/t/purpose-of-pipeline-js-in-filebeat-module/245077>\
**Category:** Beats\
**Tags:** filebeat\
**Created:** [August 15, 2020, 7:18am UTC](https://discuss.elastic.co/t/purpose-of-pipeline-js-in-filebeat-module/245077 "2020-08-15T07:18:16Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![bornatalebi](https://avatars.discourse-cdn.com/v4/letter/b/e68b1a/32.png) [@bornatalebi](https://discuss.elastic.co/u/bornatalebi)\
**Post date:** [August 15, 2020, 7:18am UTC](https://discuss.elastic.co/t/purpose-of-pipeline-js-in-filebeat-module/245077/1 "2020-08-15T07:18:17Z")

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Hi,  
I want to edit the cisco filebeat module to read more types of ios logs ( e.g., ssh login attemps). There is a pipeline.js file that does most of the job. I know it's used for Script processor. but i couldn't find any document for how to write one or how the existing one works.

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**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [September 12, 2020, 9:18am UTC](https://discuss.elastic.co/t/purpose-of-pipeline-js-in-filebeat-module/245077/2 "2020-09-12T09:18:39Z")

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