# Logstash if statement check in file

**URL:** <https://discuss.elastic.co/t/logstash-if-statement-check-in-file/69747>\
**Category:** Logstash\
**Created:** [December 22, 2016, 7:45am UTC](https://discuss.elastic.co/t/logstash-if-statement-check-in-file/69747 "2016-12-22T07:45:09Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![aydinnmu](https://avatars.discourse-cdn.com/v4/letter/a/e9bcb4/32.png) [@aydinnmu](https://discuss.elastic.co/u/aydinnmu)\
**Post date:** [December 22, 2016, 7:45am UTC](https://discuss.elastic.co/t/logstash-if-statement-check-in-file/69747/1 "2016-12-22T07:45:09Z")

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hi guys,

can i check a value in a file with if statement ?

such as _if [host] in "./hostlist.txt"_

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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:** [December 22, 2016, 8:38am UTC](https://discuss.elastic.co/t/logstash-if-statement-check-in-file/69747/2 "2016-12-22T08:38:32Z")

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Not exactly like that, but perhaps the translate filter can help you?

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<div class="post-metadata">

**Author:** ![aydinnmu](https://avatars.discourse-cdn.com/v4/letter/a/e9bcb4/32.png) [@aydinnmu](https://discuss.elastic.co/u/aydinnmu)\
**Post date:** [December 22, 2016, 9:53am UTC](https://discuss.elastic.co/t/logstash-if-statement-check-in-file/69747/3 "2016-12-22T09:53:30Z")

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thank you for quick reply. i will try that.

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<div class="post-metadata">

**Author:** ![aydinnmu](https://avatars.discourse-cdn.com/v4/letter/a/e9bcb4/32.png) [@aydinnmu](https://discuss.elastic.co/u/aydinnmu)\
**Post date:** [January 3, 2017, 8:36am UTC](https://discuss.elastic.co/t/logstash-if-statement-check-in-file/69747/4 "2017-01-03T08:36:35Z")

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it works very well. thank you so much.

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<div class="post-metadata">

**Author:** ![aydinnmu](https://avatars.discourse-cdn.com/v4/letter/a/e9bcb4/32.png) [@aydinnmu](https://discuss.elastic.co/u/aydinnmu)\
**Post date:** [January 3, 2017, 8:38am UTC](https://discuss.elastic.co/t/logstash-if-statement-check-in-file/69747/5 "2017-01-03T08:38:28Z")

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translate  
{  
field =\> "host"  
dictionary\_path =\> "/etc/logstash/hosts/3rd\_Party.yaml"  
add\_tag =\> "DC\_3rd\_Party"  
}

it is my configuration.

3rd\_Party.yaml like that

IPADDRESS : HOSTNAME

i hope it will help other guys 🙂

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<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [January 31, 2017, 8:38am UTC](https://discuss.elastic.co/t/logstash-if-statement-check-in-file/69747/6 "2017-01-31T08:38:28Z")

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