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Настройка службы для автоматической конвертации картинок

  • Установить сервис для отслеживания изменений ы папках

    sudo dnf-config-manager --enable ol9_developer_EPEL
sudo dnf install inotify-tools

  • Установить необходимые библиотеки для обрботки изображений

    sudo dnf -y install libjpeg libjpeg-turbo-utils libwebp libwebp-tools libavif libavif-tools ImageMagick ImageMagick-deve

  • Настроить скрипт для автоматическиой конвертации картинок в формате PNG в другие форматы

    sudo touch /path/to/script/image-watcher.sh
sudo chown root:root /path/to/script/image-watcher.sh
sudo chmod 755 /path/to/script/image-watcher.sh
sudo chcon -v --type=bin_t /path/to/script/image-watcher.sh
sudo vi /path/to/script/image-watcher.sh
    #!/bin/bash
WATCHING_DIR='/path/to/image/folder'
WATCHING_FORMAT='%e %w%f'
WEBP_QUALITY=70
JPEG_QUALITY=60
inotifywait --quiet --monitor --recursive --format "$WATCHING_FORMAT" \
--event close_write --event moved_from --event moved_to --event delete \
$WATCHING_DIR \
| grep -i -E '\.png$' --line-buffered \
| while read OPERATION PATH; do
  TIMESTAMP=$(/usr/bin/date +"%Y-%m-%d %H:%M:%S")
  JPEG_PATH=$(/usr/bin/sed -e 's/\.[^.]*$/.jpg/' <<< "$PATH");
  WEBP_PATH=$(/usr/bin/sed -e 's/\.[^.]*$/.webp/' <<< "$PATH");
  AVIF_PATH=$(/usr/bin/sed -e 's/\.[^.]*$/.avif/' <<< "$PATH");
  if [ $OPERATION = "MOVED_FROM" ] || [ $OPERATION = "DELETE" ]; then
    echo "File $PATH has been deleted or moved somewhere at $TIMESTAMP..."
    if [ -f "$JPEG_PATH" ]; then
      /usr/bin/rm -f "$JPEG_PATH"
      echo "  - $JPEG_PATH has been deleted"
    fi
    if [ -f "$WEBP_PATH" ]; then
      /usr/bin/rm -f "$WEBP_PATH"
      echo "  - $WEBP_PATH has been deleted"
    fi
    if [ -f "$AVIF_PATH" ]; then
      /usr/bin/rm -f "$AVIF_PATH"
      echo "  - $AVIF_PATH has been deleted"
    fi
  elif [ $OPERATION = "MOVED_TO" ] || [ $OPERATION = "CLOSE_WRITE,CLOSE" ]; then
    echo "File $PATH has been added or modified at $TIMESTAMP..."
    /usr/bin/convert -quality "$JPEG_QUALITY" "$PATH" "$JPEG_PATH"
    if [ -f "$JPEG_PATH" ]; then
      echo "  - file $JPEG_PATH has been generated"
    fi
    /usr/local/bin/cwebp -quiet -q "$WEBP_QUALITY" "$PATH" -o "$WEBP_PATH"
    if [ -f "$WEBP_PATH" ]; then
      echo "  - file $WEBP_PATH has been generated"
    fi
    /usr/bin/avifenc --min 0 --max 63 --maxalpha 63 --advanced tune=ssim --speed 0 --jobs 1 --ignore-icc "$PATH" "$AVIF_PATH"
    if [ -f "$AVIF_PATH" ]; then
      echo "  - file $AVIF_PATH has been generated"
    fi
  fi;
done;

  • Добавить скрипт как службу

    sudo vi /lib/systemd/system/image-watcher.service
    [Unit]
Description=Watcher of Image Convertion

[Service]
ExecStart=/path/to/script/image-watcher.sh

[Install]
WantedBy=multi-user.target

  • Запустить скрипт как службу

    sudo systemctl enable image-watcher.service
sudo systemctl start image-watcher.service
sudo systemctl status image-watcher.service