# Check which environment variables are being used in the current Syncthing instance?

**URL:** https://forum.syncthing.net/t/check-which-environment-variables-are-being-used-in-the-current-syncthing-instance/16189
**Category:** Development
**Created:** [January 15, 2021, 2:43pm UTC](https://forum.syncthing.net/t/check-which-environment-variables-are-being-used-in-the-current-syncthing-instance/16189 "2021-01-15T14:43:28Z")
**Posts on this page:** 3
**Page:** 1

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### Author: ![tomasz86](https://forum.syncthing.net/letter_avatar_proxy/v4/letter/t/96bed5/32.png) [@tomasz86](https://forum.syncthing.net/u/tomasz86)
#### Post date: [January 15, 2021, 2:43pm UTC](https://forum.syncthing.net/t/check-which-environment-variables-are-being-used-in-the-current-syncthing-instance/16189/1 "2021-01-15T14:43:29Z")

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I have just a quick question, as I have not been able to figure this out. Basically, is it possible to check which environment variables are being used in the current instance of Syncthing?

For instance, if I set `GOMAXPROCS=1`, I do know that Syncthing is using it by looking at the limited folder concurrency, but is there any way to simply check the current value, either from the GUI, or using CLI?

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### Author: ![calmh](https://forum.syncthing.net/user_avatar/forum.syncthing.net/calmh/32/15311_2.png) [@calmh](https://forum.syncthing.net/u/calmh)
#### Post date: [January 15, 2021, 2:45pm UTC](https://forum.syncthing.net/t/check-which-environment-variables-are-being-used-in-the-current-syncthing-instance/16189/2 "2021-01-15T14:45:46Z")

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Nothing implemented in Syncthing, but depending on the operating system you might ask it for the env vars for a given process.

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### Author: ![tomasz86](https://forum.syncthing.net/letter_avatar_proxy/v4/letter/t/96bed5/32.png) [@tomasz86](https://forum.syncthing.net/u/tomasz86)
#### Post date: [January 15, 2021, 2:56pm UTC](https://forum.syncthing.net/t/check-which-environment-variables-are-being-used-in-the-current-syncthing-instance/16189/3 "2021-01-15T14:56:20Z")

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Got it. Thank you very much 🙂.

For Windows, [Process Explorer](https://docs.microsoft.com/sysinternals/downloads/process-explorer) (proprietary, MS) or [Process Hacker](https://processhacker.sourceforge.io) (FOSS) can do it. Funnily enough, I did not realise that these tools had this capability even though I have been using them for years.