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The main bash script that will:

  • using basically two tools telegram_messages_dump and telegram-media-downloader
  • Take the chat group to check from a file
  • Check if that group has been handled already or if it's new
  • Either continue wih the last seen messages or start from scratch
  • A lot of error handling so the script can run via crontab */4(h)
  • A lot of checking of existing process to avoid deadlocks when running in parallel

The complete source is available at my (private) GitHUB repository