# Standard Out

The stdout output is used to output JSON-formatted records to stdout. It is useful for during initial installation and while troubleshooting issues to see the output of the collector directly in the terminal or logs.

{% hint style="info" %}
At anything more than a few flow records per second, the data will scroll too fast to be useful. For this reason the `stdout` output should be used primarily for manual testing.
{% endhint %}

## EF\_OUTPUT\_STDOUT\_ENABLE

Specifies whether the `stdout` output is enabled.

* Valid Values
  * `true`, `false`
* Default
  * `false`

## EF\_OUTPUT\_STDOUT\_FORMAT

* Valid Values
  * `json` - Output as a single JSON-formatted record per line.
  * `json_pretty` - Output each record as a "pretty" formatted JSON document.
* Default
  * `json_pretty`

## EF\_OUTPUT\_STDOUT\_ALLOWED\_RECORD\_TYPES

This setting allows for a comma-separated list of record types that the output will send will emit. If left empty, all types will be allowed by default.

* Valid Values
  * `as_path_hop`, `flow_option`, `flow`, `ifa_hop`, `telemetry`, `metric`, `log`
* Default
  * `'as_path_hop,flow_option,flow,ifa_hop,telemetry,metric,log'`


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