Next, install Postfix which is what we will be using to send email from your Gmail account.
sudo apt-get update & sudo apt-get upgrade.
Set Location of Calibre database to the path of the folder where your Calibre library (metadata. First thing, update Ubuntu so it has the latest packages installed.Point your browser to or for the OPDS catalog.If the application is launched from there then its fine. At this point, we would get the Calibre shortcut available in Systems’ main menu. Now, to install Calibre sudo apt install calibre. Hence, issue the following in terminal sudo apt update. On your Tonidoplug put the files in /var/www/cops/calibre. This ensures we get the latest version of the package available i.e. Copy your calibre e-book library made on an other computer (Windows/OS X/Linux), including all the files ( including file metadata.db) in the directory/folder to your Tonidoplug.