deploy-syncthing.sh

#!/bin/bash

# Installs and configures a user syncthing deployment on Ubuntu

# Add the release PGP keys:
curl -s https://syncthing.net/release-key.txt | sudo apt-key add -

# Add the "stable" channel to your APT sources:
echo "deb https://apt.syncthing.net/ syncthing stable" | sudo tee /etc/apt/sources.list.d/syncthing.list

# Update and install syncthing and xmlstarlet (to later change the default config)
sudo apt update
sudo apt install syncthing xmlstarlet

# Enable daemon for user
sudo systemctl enable syncthing@${USER}.service

# Start then stop the daemon to create a default configuration
sudo systemctl start syncthing@${USER}.service
sudo systemctl stop syncthing@${USER}.service

# Update some local syncthing settings
SYNCTHING_CONFIG=$HOME/.config/syncthing/config.xml

# Only listen on tcp4 by default
SYNCTHING_LISTEN_ADDR=tcp4://0.0.0.0:22000

# This is suitable for an internal network or docker image
SYNCTHING_GUI_ADDR=0.0.0.0:8384

# Personal preference
SYNCTHING_GUI_THEME=dark

# This keeps communication inside the network
SYNCTHING_GLOBAL_ANNOUNCE=false

if command -v xmlstarlet; then
    xmlstarlet edit -L \
        --update "//configuration/options/listenAddress" \
        --value $SYNCTHING_LISTEN_ADDR \
        --update "//configuration/gui/address" \
        --value $SYNCTHING_GUI_ADDR \
        --update "//configuration/gui/theme" \
        --value $SYNCTHING_GUI_THEME \
        --update "//configuration/options/globalAnnounceEnabled" \
        --value $SYNCTHING_GLOBAL_ANNOUNCE \
        $SYNCTHING_CONFIG
else
    echo 'Required command missing: xmlstarlet'
fi

# Restart the daemon for this user
sudo systemctl start syncthing@${USER}.service

echo 'GUI - http://localhost:8384/'
echo "Config File - $SYNCTHING_CONFIG"
echo 'Logs - journalctl -u syncthing@$USER.service'