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install.sh

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+#!/bin/bash
+# LabelPi-Installation auf Raspberry Pi OS Lite.
+# Ein-Befehl-Variante:  curl -fsSL https://raw.githubusercontent.com/DEIN-USER/labelpi/main/install.sh | bash
+set -e
+REPO="${LABELPI_REPO:-https://github.com/DEIN-USER/labelpi.git}"
+if [ -f "$(dirname "$0")/app.py" ]; then
+  cd "$(dirname "$0")"
+else
+  sudo apt update && sudo apt install -y git
+  if [ -d "$HOME/labelpi/.git" ]; then git -C "$HOME/labelpi" pull; else git clone "$REPO" "$HOME/labelpi"; fi
+  cd "$HOME/labelpi"
+fi
+DIR=$(pwd); U=${SUDO_USER:-$USER}
+sudo apt update
+sudo apt install -y python3-venv poppler-utils libusb-1.0-0 libopenjp2-7 libtiff6 libwebp7 libjpeg62-turbo liblcms2-2 libfreetype6 libharfbuzz0b libxcb1
+python3 -m venv .venv
+.venv/bin/pip install -U pip
+.venv/bin/pip install -r requirements.txt
+echo 'SUBSYSTEM=="usb", ATTR{idVendor}=="04f9", MODE="0666"' | sudo tee /etc/udev/rules.d/99-brother-ql.rules >/dev/null
+sudo udevadm control --reload-rules
+echo "$U ALL=(root) NOPASSWD: /usr/bin/systemctl reboot, /usr/bin/systemctl poweroff" | sudo tee /etc/sudoers.d/labelpi >/dev/null
+sudo chmod 440 /etc/sudoers.d/labelpi
+sudo tee /etc/systemd/system/labelpi.service >/dev/null <<UNIT
+[Unit]
+Description=LabelPi Etikettendruck
+After=network-online.target
+[Service]
+User=$U
+WorkingDirectory=$DIR
+ExecStart=$DIR/.venv/bin/python app.py
+Restart=always
+AmbientCapabilities=CAP_NET_BIND_SERVICE
+[Install]
+WantedBy=multi-user.target
+UNIT
+sudo systemctl daemon-reload
+sudo systemctl enable labelpi
+sudo systemctl restart labelpi
+echo "Fertig. Aufruf im Browser: http://$(hostname).local"