# %{\[Logs\]\[NET\] meaning

**URL:** <https://discuss.elastic.co/t/logs-net-meaning/270569>\
**Category:** Logstash\
**Created:** [April 19, 2021, 10:58am UTC](https://discuss.elastic.co/t/logs-net-meaning/270569 "2021-04-19T10:58:18Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![dddddddddddddddd](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/dddddddddddddddd/32/86746_2.png) [@dddddddddddddddd](https://discuss.elastic.co/u/dddddddddddddddd)\
**Post date:** [April 19, 2021, 10:58am UTC](https://discuss.elastic.co/t/logs-net-meaning/270569/1 "2021-04-19T10:58:18Z")

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what is the meaning of  
index =\> "%{[Logs][NET]-%{+YYYY.MM.dd}}"  
thanks

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**Author:** ![AndrewDatTeranet](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/andrewdatteranet/32/86108_2.png) [@AndrewDatTeranet](https://discuss.elastic.co/u/AndrewDatTeranet)\
**Post date:** [April 19, 2021, 1:26pm UTC](https://discuss.elastic.co/t/logs-net-meaning/270569/2 "2021-04-19T13:26:51Z")

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This means that it will write whatever data you have specified in the output into an indices named based on the logs field [Logs.NET](http://Logs.NET) field with a dash and the date. for example if I had logs with the field of [Logs.NET](http://Logs.NET) = "importantApp" it would write the logs into and indices with the pattern **importantApp-2021.04.19** if there were other logs coming in with [Logs.NET](http://Logs.NET) = "unimportantApp" it would write the logs into and indices with the pattern **unimportantApp-2021.04.19**

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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:** [May 17, 2021, 1:27pm UTC](https://discuss.elastic.co/t/logs-net-meaning/270569/3 "2021-05-17T13:27:12Z")

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