# Logstash grok break E0802 into E and 0802

**URL:** <https://discuss.elastic.co/t/logstash-grok-break-e0802-into-e-and-0802/143222>\
**Category:** Logstash\
**Created:** [August 6, 2018, 10:54pm UTC](https://discuss.elastic.co/t/logstash-grok-break-e0802-into-e-and-0802/143222 "2018-08-06T22:54:57Z")\
**Posts on this page:** 4\
**Page:** 1

<div class="post-metadata">

**Author:** ![databeata](https://avatars.discourse-cdn.com/v4/letter/d/5e9695/32.png) [@databeata](https://discuss.elastic.co/u/databeata)\
**Post date:** [August 6, 2018, 10:54pm UTC](https://discuss.elastic.co/t/logstash-grok-break-e0802-into-e-and-0802/143222/1 "2018-08-06T22:54:57Z")

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How do I break E0802 into E and 0802?

[http://grokdebug.herokuapp.com/](http://grokdebug.herokuapp.com/)

 ![image](https://us1.discourse-cdn.com/elastic/original/3X/3/b/3b560e56fdbf75a22ef4dbb61bebe26e94f81ea0.png)

E0802 05:01:29.979775 30003 logging.cc:121] stderr will be logged to this file.

 ![image](https://us1.discourse-cdn.com/elastic/original/3X/a/3/a33d2f18ce1ed999f382ba7c602c388e9254767e.png)

%{NOTSPACE:log\_level} %{NOTSPACE:log\_time} %{NOTSPACE:log\_threadid} %{NOTSPACE:log\_file}:%{NOTSPACE:log\_line}] %{GREEDYDATA:log\_msg}

 ![image](https://us1.discourse-cdn.com/elastic/original/3X/a/c/ac753e4fe2c2d4e8aa059b1e0d4ad2818c4b8246.png)

 ![image](https://us1.discourse-cdn.com/elastic/original/3X/5/0/50efc082af207d1045e573ab2f072d1b5bcc3e52.png)

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<div class="post-metadata">

**Author:** ![Badger](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/badger/32/25190_2.png) [@Badger](https://discuss.elastic.co/u/Badger)\
**Post date:** [August 6, 2018, 11:04pm UTC](https://discuss.elastic.co/t/logstash-grok-break-e0802-into-e-and-0802/143222/2 "2018-08-06T23:04:56Z")

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Use grok.

```
grok { match => { "log_level" => "(?<e>.)%{NUMBER:foo}" } }
```

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<div class="post-metadata">

**Author:** ![Badger](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/badger/32/25190_2.png) [@Badger](https://discuss.elastic.co/u/Badger)\
**Post date:** [August 7, 2018, 12:04am UTC](https://discuss.elastic.co/t/logstash-grok-break-e0802-into-e-and-0802/143222/3 "2018-08-07T00:04:20Z")

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Wait, what did you do to make everything an array of arrays? I would have expected that to get parsed as (in rubydebug terms)

```
"log_level" => "E0802"
"log_time" => "05:01:29.979775"

```

etc.

---

<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:** [September 4, 2018, 12:14am UTC](https://discuss.elastic.co/t/logstash-grok-break-e0802-into-e-and-0802/143222/4 "2018-09-04T00:14:02Z")

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