title: Import .db file to postgresql using terminal
body: <p>I am on ubuntu, i have Postgresql 13 installed on it. I have a file named (order.db) which is actually a database with a few tables in it. I want to import whole of (order.db) into postgres with same database name and of course the data. Is there any way to do it using terminal? any command?</p>
  <p>The order.db file was created with the help of sqlite3 collaborating with c++. Order.db had nothing to do with postgresql at earlier phases of my project. I just want this (order.db) file to be imported as a database to my postgres.</p>