Syncthing is an open-source file synchronization tool that allows you to sync files between devices securely. It works peer-to-peer, ensuring that your data remains private. In this guide, we will walk through the steps to install Syncthing on Debian 11.

Step 1: Update Your System

Start by ensuring your system is up to date:

sudo apt update && sudo apt upgrade -y

Step 2: Install Required Dependencies

Before installing Syncthing, install the necessary dependencies:

sudo apt install -y curl

Step 3: Add Syncthing Repository

Add the Syncthing repository to your system:

curl -s https://syncthing.net/release-key.txt | sudo apt-key add -
echo "deb https://apt.syncthing.net/ syncthing stable" | sudo tee /etc/apt/sources.list.d/syncthing.list

Step 4: Install Syncthing

Update your package list and install Syncthing:

sudo apt update
sudo apt install -y syncthing

Step 5: Start Syncthing

You can start Syncthing manually by running:

syncthing

For a background process, use:

syncthing &

Step 6: Access Syncthing Web Interface

Open your web browser and go to:

http://localhost:8384

This is the Syncthing web interface where you can manage your synchronization settings.

Step 7: Configure Syncthing

In the web interface, you can add folders to sync, connect devices, and set various options according to your needs. Follow the on-screen instructions to set up your first folder.

Step 8: Set Up Syncthing as a Service (Optional)

If you want Syncthing to run as a service, create a systemd service file:

sudo nano /etc/systemd/system/syncthing.service

Add the following configuration:

[Unit]
Description=Syncthing
After=network-online.target

[Service]
User=your_username
ExecStart=/usr/bin/syncthing
Restart=on-failure
RestartSec=10

[Install]
WantedBy=multi-user.target

Replace your_username with your actual username.

Step 9: Enable and Start the Service

Enable and start the Syncthing service:

sudo systemctl enable syncthing
sudo systemctl start syncthing

Conclusion

You have successfully installed and configured Syncthing on Debian 11. This powerful tool will help you keep your files synchronized across multiple devices.

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