How To Install zinnia on CentOS 8

zinnia is Online handwriting recognition system with machine learning

Introduction

In this tutorial we learn how to install zinnia on CentOS 8.

What is `zinnia`

Zinnia provides a simple, customizable, and portable dynamic OCR system for hand-written input, based on Support Vector Machines. Zinnia simply receives user pen strokes as coordinate data and outputs the best matching characters sorted by SVM confidence. To maintain portability, it has no rendering functionality. In addition to recognition, Zinnia provides a training module capable of creating highly efficient handwriting recognition models. This package contains the shared libraries.

We can use yum or dnf to install zinnia on CentOS 8. In this tutorial we discuss both methods but you only need to choose one of method to install zinnia.

Install zinnia on CentOS 8 Using dnf

Update yum database with dnf using the following command.

sudo dnf makecache --refresh

The output should look something like this:

CentOS Linux 8 - AppStream                                       43 kB/s | 4.3 kB     00:00    
CentOS Linux 8 - BaseOS                                          65 kB/s | 3.9 kB     00:00    
CentOS Linux 8 - ContinuousRelease                               43 kB/s | 3.0 kB     00:00    
CentOS Linux 8 - Extras                                          23 kB/s | 1.5 kB     00:00    
CentOS Linux 8 - FastTrack                                       40 kB/s | 3.0 kB     00:00    
CentOS Linux 8 - HighAvailability                                36 kB/s | 3.9 kB     00:00    
CentOS Linux 8 - Plus                                            24 kB/s | 1.5 kB     00:00    
CentOS Linux 8 - PowerTools                                      50 kB/s | 4.3 kB     00:00    
Extra Packages for Enterprise Linux Modular 8 - x86_64           13 kB/s | 9.2 kB     00:00    
Extra Packages for Enterprise Linux 8 - x86_64                   24 kB/s | 8.5 kB     00:00    
Metadata cache created.

After updating yum database, We can install zinnia using dnf by running the following command:

sudo dnf -y install zinnia

Install zinnia on CentOS 8 Using yum

Update yum database with yum using the following command.

sudo yum makecache --refresh

The output should look something like this:

CentOS Linux 8 - AppStream                                       43 kB/s | 4.3 kB     00:00    
CentOS Linux 8 - BaseOS                                          65 kB/s | 3.9 kB     00:00    
CentOS Linux 8 - ContinuousRelease                               43 kB/s | 3.0 kB     00:00    
CentOS Linux 8 - Extras                                          23 kB/s | 1.5 kB     00:00    
CentOS Linux 8 - FastTrack                                       40 kB/s | 3.0 kB     00:00    
CentOS Linux 8 - HighAvailability                                36 kB/s | 3.9 kB     00:00    
CentOS Linux 8 - Plus                                            24 kB/s | 1.5 kB     00:00    
CentOS Linux 8 - PowerTools                                      50 kB/s | 4.3 kB     00:00    
Extra Packages for Enterprise Linux Modular 8 - x86_64           13 kB/s | 9.2 kB     00:00    
Extra Packages for Enterprise Linux 8 - x86_64                   24 kB/s | 8.5 kB     00:00    
Metadata cache created.

After updating yum database, We can install zinnia using yum by running the following command:

sudo yum -y install zinnia

How To Uninstall zinnia on CentOS 8

To uninstall only the zinnia package we can use the following command:

sudo dnf remove zinnia

zinnia Package Contents on CentOS 8

/usr/lib/.build-id
/usr/lib/.build-id/ff
/usr/lib/.build-id/ff/97dec7629897d23f2e664f73b59350cee7d98a
/usr/lib64/libzinnia.so.0
/usr/lib64/libzinnia.so.0.0.0
/usr/share/doc/zinnia
/usr/share/doc/zinnia/COPYING
/usr/share/doc/zinnia/README

References

zinnia website

Summary

In this tutorial we learn how to install zinnia on CentOS 8 using yum and dnf.