How To Install ocrodjvu on Ubuntu 18.04
Introduction
In this tutorial we learn how to install ocrodjvu on Ubuntu 18.04.
What is ocrodjvu
ocrodjvu is:
Ocrodjvu is a wrapper around the Optical Character Recognition (OCR) systems Cuneiform, Gocr, Ocrad, OCRopus and (standalone) Tesseract. It is designed for OCR on documents in DjVu format, which is especially suited for high-quality archiving of books.
After processing, the DjVu document embeds a text layer. Other programs can then be used to read the document, search it for specific terms, print it out, or use the information in the OCR layer as a way to improve the document’s accessibility.
There are three methods to install ocrodjvu on Ubuntu 18.04. We can use apt-get, apt and aptitude. In the following sections we will describe each method. You can choose one of them.
Install ocrodjvu Using apt-get
Update apt database with apt-get using the following command.
sudo apt-get update
After updating apt database, We can install ocrodjvu using apt-get by running the following command:
sudo apt-get -y install ocrodjvu
Install ocrodjvu Using apt
Update apt database with apt using the following command.
sudo apt update
After updating apt database, We can install ocrodjvu using apt by running the following command:
sudo apt -y install ocrodjvu
Install ocrodjvu Using aptitude
If you want to follow this method, you might need to install aptitude first since aptitude is usually not installed by default on Ubuntu. Update apt database with aptitude using the following command.
sudo aptitude update
After updating apt database, We can install ocrodjvu using aptitude by running the following command:
sudo aptitude -y install ocrodjvu
How To Uninstall ocrodjvu on Ubuntu 18.04
To uninstall only the ocrodjvu package we can use the following command:
sudo apt-get remove ocrodjvu
Uninstall ocrodjvu And Its Dependencies
To uninstall ocrodjvu and its dependencies that are no longer needed by Ubuntu 18.04, we can use the command below:
sudo apt-get -y autoremove ocrodjvu
Remove ocrodjvu Configurations and Data
To remove ocrodjvu configuration and data from Ubuntu 18.04 we can use the following command:
sudo apt-get -y purge ocrodjvu
Remove ocrodjvu configuration, data, and all of its dependencies
We can use the following command to remove ocrodjvu configurations, data and all of its dependencies, we can use the following command:
sudo apt-get -y autoremove --purge ocrodjvu
References
Summary
In this tutorial we learn how to install ocrodjvu package on Ubuntu 18.04 using different package management tools: apt, apt-get and aptitude.
