How To Install pngcheck on Ubuntu 20.04
Introduction
In this tutorial we learn how to install pngcheck
on Ubuntu 20.04.
What is pngcheck
pngcheck is:
pngcheck verifies the integrity of PNG, JNG and MNG files (by checking the internal 32-bit CRCs or checksums) and optionally dumps almost all of the chunk-level information in the image in human-readable form. For example, it can be used to print the basic stats about an image (dimensions, bit depth, etc.); to list the color and transparency info in its palette; or to extract the embedded text annotations. All PNG and JNG chunks are supported, plus almost all MNG chunks (everything but PAST, DISC, tERm, DROP, DBYK, and ORDR). This is a command-line program with batch capabilities (e.g., pngcheck *.png).
Also includes pngsplit which can split a PNG, MNG or JNG file into individual, numbered chunks.
There are three methods to install pngcheck
on Ubuntu 20.04. We can use apt-get
, apt
and aptitude
. In the following sections we will describe each method. You can choose one of them.
Install pngcheck Using apt-get
Update apt database with apt-get
using the following command.
sudo apt-get update
After updating apt database, We can install pngcheck
using apt-get
by running the following command:
sudo apt-get -y install pngcheck
Install pngcheck Using apt
Update apt database with apt
using the following command.
sudo apt update
After updating apt database, We can install pngcheck
using apt
by running the following command:
sudo apt -y install pngcheck
Install pngcheck 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 pngcheck
using aptitude
by running the following command:
sudo aptitude -y install pngcheck
How To Uninstall pngcheck on Ubuntu 20.04
To uninstall only the pngcheck
package we can use the following command:
sudo apt-get remove pngcheck
Uninstall pngcheck And Its Dependencies
To uninstall pngcheck
and its dependencies that are no longer needed by Ubuntu 20.04, we can use the command below:
sudo apt-get -y autoremove pngcheck
Remove pngcheck Configurations and Data
To remove pngcheck
configuration and data from Ubuntu 20.04 we can use the following command:
sudo apt-get -y purge pngcheck
Remove pngcheck configuration, data, and all of its dependencies
We can use the following command to remove pngcheck
configurations, data and all of its dependencies, we can use the following command:
sudo apt-get -y autoremove --purge pngcheck
References
Summary
In this tutorial we learn how to install pngcheck
package on Ubuntu 20.04 using different package management tools: apt
, apt-get
and aptitude
.