# Logstash error : not showing output
**URL:** https://discuss.elastic.co/t/logstash-error-not-showing-output/49129
**Category:** Logstash
**Created:** [May 4, 2016, 6:57am UTC](https://discuss.elastic.co/t/logstash-error-not-showing-output/49129 "2016-05-04T06:57:58Z")
**Posts on this page:** 6
**Page:** 1
### Author:  [@prakashkumar](https://discuss.elastic.co/u/prakashkumar)
#### Post date: [May 4, 2016, 6:57am UTC](https://discuss.elastic.co/t/logstash-error-not-showing-output/49129/1 "2016-05-04T06:57:58Z")
input {
file {
codec =\> json
type =\> "log4j-json"
path =\> "C:/Users/akashsoni/Downloads/k/logstash-tutorial/20160402050401.log"
start\_position =\>beginning
}
}
output {
stdout {}
}
Hi, This is my code which I am trying to run but, i got error when i give command at command prompt:C:\Users\akashsoni\Downloads\logstash-2.3.1\bin\>logstash -f first-pipeline.conf- -config.In result:error is: missing: en.logstash.runner.configuration.file
And i am a window user.
when i run this command:C:\Users\akashsoni\Downloads\logstash-2.3.1\bin\>logstash -f first-pipeline.conf
then it will start the pipeline but not show any output,why?
---
### Author:  [@warkolm](https://discuss.elastic.co/u/warkolm)
#### Post date: [May 4, 2016, 7:00am UTC](https://discuss.elastic.co/t/logstash-error-not-showing-output/49129/2 "2016-05-04T07:00:29Z")
It'd help if you formatted your post, we can't tell where your error from your command 🙂
---
### Author:  [@prakashkumar](https://discuss.elastic.co/u/prakashkumar)
#### Post date: [May 4, 2016, 7:04am UTC](https://discuss.elastic.co/t/logstash-error-not-showing-output/49129/3 "2016-05-04T07:04:23Z")
C:\Users\akashsoni\Downloads\logstash-2.3.1\bin\>logstash -f first-pipeline.conf- -config
o/p: missing: en.logstash.runner.configuration.file
C:\Users\akashsoni\Downloads\logstash-2.3.1\bin\>logstash -f first-pipeline.conf
o/p: io/console not supported; tty will not be manipulated
Settings: Default pipeline workers: 4
Pipeline main started
---
### Author:  [@warkolm](https://discuss.elastic.co/u/warkolm)
#### Post date: [May 4, 2016, 7:08am UTC](https://discuss.elastic.co/t/logstash-error-not-showing-output/49129/4 "2016-05-04T07:08:49Z")
That's not valid syntax. If you use `-f` you don't need `--config`, take a look at [https://www.elastic.co/guide/en/logstash/current/command-line-flags.html](https://www.elastic.co/guide/en/logstash/current/command-line-flags.html).
---
### Author:  [@prakashkumar](https://discuss.elastic.co/u/prakashkumar)
#### Post date: [May 4, 2016, 7:11am UTC](https://discuss.elastic.co/t/logstash-error-not-showing-output/49129/5 "2016-05-04T07:11:34Z")
when i am not using config it has to show my log.But it not show any thing
😌
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### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [July 6, 2017, 4:59am UTC](https://discuss.elastic.co/t/logstash-error-not-showing-output/49129/6 "2017-07-06T04:59:27Z")