How To Install pngcheck on Fedora 34
Introduction
In this tutorial we learn how to install pngcheck on Fedora 34.
What is pngcheck
pngcheck verifies the integrity of PNG, JNG and MNG files (by checking the internal 32-bit CRCs [checksums] and decompressing the image data); it can optionally dump almost all of the chunk-level information in the image in human-readable form. For example, it can be used to print the basic statistics about an image (dimensions, bit depth, etc.); to list the color and transparency info in its palette (assuming it has one); or to extract the embedded text annotations. This is a command-line program with batch capabilities. The current release supports all PNG, MNG and JNG chunks, including the newly approved sTER stereo-layout chunk. It correctly reports errors in all but two of the images in Chris Nokleberg’s brokensuite-20061204.
We can use yum or dnf to install pngcheck on Fedora 34. In this tutorial we discuss both methods but you only need to choose one of method to install pngcheck.
Install pngcheck on Fedora 34 Using dnf
Update yum database with dnf using the following command.
sudo dnf makecache --refresh
The output should look something like this:
Fedora 34 - x86_64 20 kB/s | 6.6 kB 00:00
Fedora 34 openh264 (From Cisco) - x86_64 1.4 kB/s | 989 B 00:00
Fedora Modular 34 - x86_64 68 kB/s | 6.5 kB 00:00
Fedora 34 - x86_64 - Updates 3.5 kB/s | 6.2 kB 00:01
Fedora Modular 34 - x86_64 - Updates 17 kB/s | 5.9 kB 00:00
Metadata cache created.
After updating yum database, We can install pngcheck using dnf by running the following command:
sudo dnf -y install pngcheck
Install pngcheck on Fedora 34 Using yum
Update yum database with yum using the following command.
sudo yum makecache --refresh
The output should look something like this:
Fedora 34 - x86_64 20 kB/s | 6.6 kB 00:00
Fedora 34 openh264 (From Cisco) - x86_64 1.4 kB/s | 989 B 00:00
Fedora Modular 34 - x86_64 68 kB/s | 6.5 kB 00:00
Fedora 34 - x86_64 - Updates 3.5 kB/s | 6.2 kB 00:01
Fedora Modular 34 - x86_64 - Updates 17 kB/s | 5.9 kB 00:00
Metadata cache created.
After updating yum database, We can install pngcheck using yum by running the following command:
sudo yum -y install pngcheck
How To Uninstall pngcheck on Fedora 34
To uninstall only the pngcheck package we can use the following command:
sudo dnf remove pngcheck
pngcheck Package Contents on Fedora 34
/usr/bin/pngcheck
/usr/lib/.build-id
/usr/lib/.build-id/11
/usr/lib/.build-id/11/e1413a452bb80ef387bd22f78480af9c1655b1
/usr/share/doc/pngcheck
/usr/share/doc/pngcheck/CHANGELOG
/usr/share/doc/pngcheck/README
/usr/share/licenses/pngcheck
/usr/share/licenses/pngcheck/LICENSE
/usr/share/man/man1/pngcheck.1.gz
/usr/bin/pngcheck
/usr/lib/.build-id
/usr/lib/.build-id/de
/usr/lib/.build-id/de/53d614fe32e9340334a6f5e2a2a79c71e722b8
/usr/share/doc/pngcheck
/usr/share/doc/pngcheck/CHANGELOG
/usr/share/doc/pngcheck/README
/usr/share/licenses/pngcheck
/usr/share/licenses/pngcheck/LICENSE
/usr/share/man/man1/pngcheck.1.gz
References
Summary
In this tutorial we learn how to install pngcheck on Fedora 34 using yum and dnf.