# Insert first lines as fields to each line
**URL:** https://discuss.elastic.co/t/insert-first-lines-as-fields-to-each-line/177385
**Category:** Logstash
**Created:** [April 18, 2019, 12:54am UTC](https://discuss.elastic.co/t/insert-first-lines-as-fields-to-each-line/177385 "2019-04-18T00:54:28Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@charles.liu](https://discuss.elastic.co/u/charles.liu)
#### Post date: [April 18, 2019, 12:54am UTC](https://discuss.elastic.co/t/insert-first-lines-as-fields-to-each-line/177385/1 "2019-04-18T00:54:28Z")
Hi all
I am new to ELK and Logstash. Here is my question:
I have raw log file, content like below:
AA:aa
BB:bb
a1,b1,c1,d1
a2,b2,c2,d2
a3,b3,c3,d3
a4,b4,c4,d4
My question is how to setup the configure so my final input can be
AA:aa BB:bb a1,b1,c1,d1
AA:aa BB:bb a2,b2,c2,d2
AA:aa BB:bb a3,b3,c3,d3
AA:aa BB:bb a4,b4,c4,d4
or just like below, as AA and BB is the field name.
aa,bb,a1,b1,c1,d1
aa,bb,a2,b2,c2,d2
aa,bb,a3,b3,c3,d3
aa,bb,a4,b4,c4,d4
---
### Author:  [@Badger](https://discuss.elastic.co/u/Badger)
#### Post date: [April 18, 2019, 2:01pm UTC](https://discuss.elastic.co/t/insert-first-lines-as-fields-to-each-line/177385/2 "2019-04-18T14:01:53Z")
[This](https://discuss.elastic.co/t/how-to-handle-metadata-in-file-headers/167544) thread might help you, but realize that this is fragile, and does not scale because you have to have '--pipeline.workers 1'
---
### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [May 16, 2019, 2:01pm UTC](https://discuss.elastic.co/t/insert-first-lines-as-fields-to-each-line/177385/3 "2019-05-16T14:01:54Z")
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