# Passing command line parameters while starting Logstash
**URL:** https://discuss.elastic.co/t/passing-command-line-parameters-while-starting-logstash/41926
**Category:** Logstash
**Created:** [February 16, 2016, 7:00pm UTC](https://discuss.elastic.co/t/passing-command-line-parameters-while-starting-logstash/41926 "2016-02-16T19:00:28Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@gaurav1424](https://discuss.elastic.co/u/gaurav1424)
#### Post date: [February 16, 2016, 7:00pm UTC](https://discuss.elastic.co/t/passing-command-line-parameters-while-starting-logstash/41926/1 "2016-02-16T19:00:28Z")
Hello All,
Is there any was to pass command line arguments while starting logstash ?
Current what I do :
I start logstash as -\> bin/logstash -f and in config file the parameters which are region specific I add as Hard coded (using add\_field option)
What I want :
something like this
bin/logstash -f -region = AMER Data\_center = LAX
bin/logstash -f -region = AMER Data\_center = CHI
bin/logstash -f -region = EMEA Data\_center = LON
Something like this.
Thanks,
Gaurav
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### Author:  [@magnusbaeck](https://discuss.elastic.co/u/magnusbaeck)
#### Post date: [February 16, 2016, 9:34pm UTC](https://discuss.elastic.co/t/passing-command-line-parameters-while-starting-logstash/41926/2 "2016-02-16T21:34:07Z")
Have you looked at the environment filter? You're not saying what you want to accomplish so it's hard to help out.
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### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [July 6, 2017, 5:11am UTC](https://discuss.elastic.co/t/passing-command-line-parameters-while-starting-logstash/41926/3 "2017-07-06T05:11:07Z")