Title: Configure syncthing to sync a single file

	Title: Configure syncthing to sync a single file
	Author: Solène
	Date: 28 January 2023
	Tags: linux syncthing nocloud
	Description: In this article, you will learn how to configure syncthing
	to synchronize a single file or extension in a directory

	# Introduction

	Quick blog entry to remember about something that wasn't as trivial as
	I thought. I needed to use syncthing to keep a single file in sync
	(KeePassXC database) without synchronizing the whole directory.

	You have to use mask exclusion feature to make it possible. Put it
	simple, you need the share to forbid every file, except the one you
	want to sync.

	This configuration happens in the `.stignore` file in the synchronized
	directory, but can also be managed from the Web interface.

	Syncthing documentation about ignoring files

	# Example

	If I want to only sync KeePassXC files (they have the `.kdbx`
	extension), I have this in my `.stignore` file:

	```text
	!*.kdbx
	*
	```

	And that's all!

	Note that this must be set on all nodes using this share, otherwise you
	may have surprises.