How To Install qtsinglecoreapplication-qt5 on CentOS 8

qtsinglecoreapplication-qt5 is Qt library to start applications only once per user (Qt5)

Introduction

In this tutorial we learn how to install qtsinglecoreapplication-qt5 on CentOS 8.

What is qtsinglecoreapplication-qt5

For some applications it is useful or even critical that they are started only once by any user. Future attempts to start the application should activate any already running instance, and possibly perform requested actions, e.g. loading a file, in that instance. For console (non-GUI) applications, the QtSingleCoreApplication variant is provided, which avoids dependency on QtGui. This is a special build against Qt5.

We can use yum or dnf to install qtsinglecoreapplication-qt5 on CentOS 8. In this tutorial we discuss both methods but you only need to choose one of method to install qtsinglecoreapplication-qt5.

Install qtsinglecoreapplication-qt5 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 qtsinglecoreapplication-qt5 using dnf by running the following command:

sudo dnf -y install qtsinglecoreapplication-qt5

Install qtsinglecoreapplication-qt5 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 qtsinglecoreapplication-qt5 using yum by running the following command:

sudo yum -y install qtsinglecoreapplication-qt5

How To Uninstall qtsinglecoreapplication-qt5 on CentOS 8

To uninstall only the qtsinglecoreapplication-qt5 package we can use the following command:

sudo dnf remove qtsinglecoreapplication-qt5

qtsinglecoreapplication-qt5 Package Contents on CentOS 8

/usr/lib/.build-id
/usr/lib/.build-id/5f
/usr/lib/.build-id/5f/2b659a86a101adccf0b3abed49c6485dcff2b0
/usr/lib64/libQt5Solutions_SingleCoreApplication-2.6.so.1
/usr/lib64/libQt5Solutions_SingleCoreApplication-2.6.so.1.0
/usr/lib64/libQt5Solutions_SingleCoreApplication-2.6.so.1.0.0
/usr/share/licenses/qtsinglecoreapplication-qt5
/usr/share/licenses/qtsinglecoreapplication-qt5/LGPL_EXCEPTION
/usr/share/licenses/qtsinglecoreapplication-qt5/LICENSE.GPL3
/usr/share/licenses/qtsinglecoreapplication-qt5/LICENSE.LGPL

References

Summary

In this tutorial we learn how to install qtsinglecoreapplication-qt5 on CentOS 8 using yum and dnf.