How To Install jpegjudge on Ubuntu 18.04
Introduction
In this tutorial we learn how to install jpegjudge
on Ubuntu 18.04.
What is jpegjudge
jpegjudge is:
Try to determine which same picture was saved at a higher quality, even if the picture was saved at low quality and later at a higher quality.
By a statistical analysis over the quantization table stored in a jpeg one could probably deduce the quality which the picture was saved (i.e. this particular save), but it in no way says anything about the picture quality itself (i.e. whether it has ever been saved at lower quality before since its creation). For example, one might have saved a jpeg picture at low quality, and later saved at a higher quality, yet the information lost during the first save can’t be restored.
There are three methods to install jpegjudge
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 jpegjudge Using apt-get
Update apt database with apt-get
using the following command.
sudo apt-get update
After updating apt database, We can install jpegjudge
using apt-get
by running the following command:
sudo apt-get -y install jpegjudge
Install jpegjudge Using apt
Update apt database with apt
using the following command.
sudo apt update
After updating apt database, We can install jpegjudge
using apt
by running the following command:
sudo apt -y install jpegjudge
Install jpegjudge 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 jpegjudge
using aptitude
by running the following command:
sudo aptitude -y install jpegjudge
How To Uninstall jpegjudge on Ubuntu 18.04
To uninstall only the jpegjudge
package we can use the following command:
sudo apt-get remove jpegjudge
Uninstall jpegjudge And Its Dependencies
To uninstall jpegjudge
and its dependencies that are no longer needed by Ubuntu 18.04, we can use the command below:
sudo apt-get -y autoremove jpegjudge
Remove jpegjudge Configurations and Data
To remove jpegjudge
configuration and data from Ubuntu 18.04 we can use the following command:
sudo apt-get -y purge jpegjudge
Remove jpegjudge configuration, data, and all of its dependencies
We can use the following command to remove jpegjudge
configurations, data and all of its dependencies, we can use the following command:
sudo apt-get -y autoremove --purge jpegjudge
References
Summary
In this tutorial we learn how to install jpegjudge
package on Ubuntu 18.04 using different package management tools: apt
, apt-get
and aptitude
.