# 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:** 3
**Page:** 1

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### Author: ![Priyaranjan\_Mudliar](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/priyaranjan_mudliar/32/33726_2.png) [@Priyaranjan\_Mudliar](https://discuss.elastic.co/u/Priyaranjan_Mudliar)
#### Post date: [August 20, 2018, 9:59am UTC](https://discuss.elastic.co/t/logstash-for-adding-a-new-field/145129/1 "2018-08-20T09:59:04Z")

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Can i somehow get only the filename in my "source" field instead of the whole path of the file.

Please help. Thanks

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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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### Author: ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)
#### Post date: [September 17, 2018, 12:29pm UTC](https://discuss.elastic.co/t/logstash-for-adding-a-new-field/145129/3 "2018-09-17T12:29:01Z")

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