# Logstash for Adding a New Field

**URL:** <https://discuss.elastic.co/t/logstash-for-adding-a-new-field/145129>\
**Category:** Logstash\
**Created:** [August 20, 2018, 9:59am UTC](https://discuss.elastic.co/t/logstash-for-adding-a-new-field/145129 "2018-08-20T09:59:04Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![magnusbaeck](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/magnusbaeck/32/44943_2.png) [@magnusbaeck](https://discuss.elastic.co/u/magnusbaeck)\
**Post date:** [August 20, 2018, 12:29pm UTC](https://discuss.elastic.co/t/logstash-for-adding-a-new-field/145129/2 "2018-08-20T12:29:01Z")

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This has been asked many times before. See e.g. [Extract File Name from source](https://discuss.elastic.co/t/extract-file-name-from-source/73288).

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_[View the full topic](https://discuss.elastic.co/t/logstash-for-adding-a-new-field/145129)._