Fedora 39 : DNF5 error update.

Sometimes errors may occur when installing Fedora packages using the dnf or dnf5 utility. One of the reasons may result from the coincidence of the package installation process. If you know how to build packages, how to develop the Fedora team, and how many repositories you have set up in your Linux distribution, then such an error can be easily fixed. Here is the error:

First, install the dnf5 and dnf5-plugins with this command:

sudo dnf install dnf5 dnf5-plugins

One good way to fix error is to have defined settings in : /etc/dnf/dnf.conf in order to have a good installation flow and how to link packages to the interconnected job.

See my example that fix this error:

Some packages may conflict in the repo and you can check with the dnf info fedora_repo_package command.

For example, you can use exclude=*.noarch in the [main] area.

News : The new DNF5 tool is on Fedora .

The new DNF5 will provide a significant improvement in user experiences and performance. The replacement is the second step in upgrade of Fedora Software Management stack. Without the change there will be multiple software management tool (DNF5, old Microdnf, PackageKit, and DNF) based on different libraries (libdnf, libdnf5), providing a different behavior, and not sharing a history and module state. We can also expect that DNF will have only limited support from upstream. The DNF5 development was announced on Fedora-Devel list in 2020.

You can read more on the official webpage on Fedora area.

Fedora 39 : GNOME new version 44.2 .

The GNOME Project proudly announced today the release and general availability of the GNOME 44 desktop environment series, a major update that brings several new features and lots of improvements.

You can read more on the official website.

You can see a first version 44 on this youtube video:

Fedora 39 : Share folder with Fedora on VirtualBox.

To share a folder called share between the Windows operating system and Fedora 39 using VirtualBox, the folder must be created and added to the settings as follows:

In VirtualBox, make sure the Fedora virtual machine is stopped.

Select the Fedora virtual machine in the list of virtual machines and click the "Settings" button on the top bar of the VirtualBox window.

In the "Settings" window of the virtual machine, select the "Shared Folders" category.

Click the "+" button on the right to add a new shared folder.

In the "Add Share" window, specify the following details:

Folder Path: Browse to and select the C:\share folder on the host.

Folder Name: You can enter a name for the shared folder.

Select the access options you want, such as "Auto-mount" and "Make Permanent".

Click the "OK" button to save the settings.

Start the Fedora virtual machine and on the Fedora virtual machine, open a terminal and run the following command to mount the shared folder:

You can see the file test.txt is visible in Fedora.

Fedora 39 : Regular expressions with gedit editor.

Regular expressions can be used in the gedit editor using the Find and Replace option with the regular expressions checkbox selected. This can be used to remove empty lines from source code, remove comment lines, replace indexing - if using Python scripts, or replace content. Here's an example of how to remove empty lines from a text using regular expressions:

Fedora 39 : Using a stick or hard disk created in Windows.

When attached to USB, Linux distribution cannot access it.

Install these packages with the DNF utility.

sudo dnf install ntfs-3g
sudo dnf install ntfsfix

Use these commands to create a folder where it will be mounted and test if it can be mounted and where it is viewed :

sudo mkdir /mnt/mydrive
sudo mount -t ntfs-3g /dev/sdb1 /mnt/mydrive
dmesg| grep usb 
sudo mount /dev/sdb /mnt/mydrive
df -h

Fix errors with this command

sudo umount /dev/sdb1
sudo ntfsfix /dev/sdb1

It resumes the operation of mounting it in the folder named /mnt/mydrive:

sudo mount -t ntfs-3g /dev/sdb1 /mnt/mydrive

This command will mount as a superuser but can be modified as a normal user.

Create a USB folder into your home folder as normal user.

You can use these commands to use your files like a normal user:

[mythcat@fedora ~]$ sudo mount -t ntfs-3g /dev/sdb1 ~/USB
[sudo] password for mythcat: 
...
[mythcat@fedora ~]$ sudo umount /dev/sdb1

Fedora 39 : The vifm file manager ...

My monitor broke a few days ago so i'm using an old laptop. Website posts will be less frequent.

You can use the vifm file manager in Fedora 39 easy.

Use the DNF command tool to install it.

[root@fedora mythcat]# dnf install vifm

See the result of this file manager:

Fedora 39 : GPT on linux terminal.

The ChatGPT is possible in your Windows, macOS, and Linux terminal ... tgpt is a cross-platform cli (commandline) tool that lets you use ChatGPT 3.5 in Terminal without API KEYS. It communicates with the Backend of Bai chatbot. Its written in Go. You can see the source code on this GitHub project.

Fedora 39 : Fedora 39 Cinnamon environment pre-release - upgrade.

Today I tested the new version of fedora 39 and it worked very well.

If you want to upgrade Fedora using the DNF system upgrade then you can find all information on the official webpage.

You can try a Fedora 39 Cinnamon environment pre-release from this website.

A very good feature comes with this new command remove-retired-packages.

This allow you to keep the all packages with update.

Fedora 38 : LibreOffice with new features.

LibreOffice is a free and powerful office suite, and a successor to OpenOffice.org (commonly known as OpenOffice). Its clean interface and feature-rich tools help you unleash your creativity and enhance your productivity... see the official website.

I install easy with DNF tool on Fedora 38:

[root@fedora mythcat]# dnf install libreoffice.x86_64
Last metadata expiration check: 1:13:09 ago on Thu 02 Feb 2023 05:03:42 PM EET.
Dependencies resolved.
================================================================================
 Package                         Arch     Version               Repo       Size
================================================================================
Installing:
 libreoffice                     x86_64   1:7.5.0.2-2.fc38      rawhide    15 k
Installing dependencies:
 apache-commons-collections      noarch   3.2.2-29.fc38         rawhide   531 k
 apache-commons-lang3            noarch   3.12.0-7.fc38         rawhide   559 k
 firebird                        x86_64   4.0.2.2816-4.fc38     rawhide   5.1 M
 firebird-utils                  x86_64   4.0.2.2816-4.fc38     rawhide   2.1 M
 flute                           noarch   1.3.0-31.OOo31.fc38   rawhide    64 k
 javapackages-tools              noarch   6.1.0-7.fc38          rawhide    37 k
 libbase                         noarch   1.1.3-36.fc38         rawhide   130 k
 libfbclient2                    x86_64   4.0.2.2816-4.fc38     rawhide   860 k
 libfonts                        noarch   1.1.3-40.fc38         rawhide   177 k
 libformula                      noarch   1.1.3-37.fc38         rawhide   340 k
 libib-util                      x86_64   4.0.2.2816-4.fc38     rawhide    12 k
 liblayout                       noarch   0.2.10-30.fc38        rawhide   654 k
 libloader                       noarch   1.1.3-38.fc38         rawhide   130 k
 libreoffice-base                x86_64   1:7.5.0.2-2.fc38      rawhide   2.3 M
 libreoffice-draw                x86_64   1:7.5.0.2-2.fc38      rawhide    23 k
 libreoffice-math                x86_64   1:7.5.0.2-2.fc38      rawhide    20 k
 librepository                   noarch   1.1.3-37.fc38         rawhide    68 k
 libserializer                   noarch   1.1.2-36.fc38         rawhide    36 k
 ongres-scram                    noarch   2.1-8.fc38            rawhide    65 k
 ongres-scram-client             noarch   2.1-8.fc38            rawhide    24 k
 ongres-stringprep               noarch   1.1-6.fc38            rawhide    74 k
 pentaho-libxml                  noarch   1.1.3-36.fc38         rawhide   101 k
 pentaho-reporting-flow-engine   noarch   1:0.9.4-29.fc38       rawhide   285 k
 postgresql-jdbc                 noarch   42.5.1-2.fc38         rawhide   836 k
 sac                             noarch   1.3-41.fc38           rawhide    19 k
 velocity                        noarch   1.7-40.fc38           rawhide   386 k

Transaction Summary
================================================================================
Install  27 Packages

Total download size: 15 M
Installed size: 46 M
Is this ok [y/N]: y  
...

This software works good on my old laptop:

You can see a video from the official youtube channel with the new features:

Fedora 37 : Lite editor.

lite is a lightweight text editor written mostly in Lua — it aims to provide something practical, pretty, small and fast, implemented as simply as possible; easy to modify and extend, or to use without doing either.

You can find this project on GitHub.

I install with DNF tool:

# dnf install lite-xl.x86_64
...
Installed:
  lite-xl-2.1.1-2.fc38.x86_64                                                   

Complete!

... and works very well:

Fedora 37 : SeLinux alert detection from Trend Micro HouseCall.

If you use the tool from Trend Micro HouseCall for Home Networks, then it is possible that the SELinux tool from Fedora Linux will warn you with an alert.

It can be easily fixed with the following commands.

[root@fedora mythcat]# ausearch -c 'journal-offline' --raw | audit2allow -M my-journaloffline
******************** IMPORTANT ***********************
To make this policy package active, execute:

semodule -i my-journaloffline.pp

[root@fedora mythcat]# semodule -X 300 -i my-journaloffline.pp
libsemanage.semanage_get_lock: Could not get direct transaction lock at /var/lib/selinux/targeted/semanage.trans.LOCK. (Resource temporarily unavailable).

Because I got an access error to the resource, I used some Linux commands that checked the status of my selinux, I searched and stopped the process that doesn't let me access the resource and restarted the command:

[root@fedora mythcat]# cat /etc/selinux/config


SELINUX=enforcing
# SELINUXTYPE= can take one of these three values:
#     targeted - Targeted processes are protected,
#     minimum - Modification of targeted policy. Only selected processes are protected.
#     mls - Multi Level Security protection.
SELINUXTYPE=targeted




[root@fedora mythcat]# ps aux | grep semodule
root        3974  4.2  5.2 211904 209952 pts/0   T    13:29   0:17 semodule -X 300 -i my-journaloffline.pp
root        4032  0.0  0.0 222424  2288 pts/0    S+   13:36   0:00 grep --color=auto semodule
[root@fedora mythcat]# kill -9 3974
[root@fedora mythcat]# semodule -X 300 -i my-journaloffline.pp
[1]+  Killed                  semodule -X 300 -i my-journaloffline.pp
[root@fedora mythcat]# semodule -X 300 -i my-journaloffline.pp

This is how the Selinux alert appears in the environment of the Fedora 37 Linux distribution.

Fedora 37 : Vala development in Fedora 37.

Yesterday I tested the Vala programming language on the Fedora 37 linux distribution. The basic idea was that most linux distribution environments use the GTK+ toolkit that Gnome developed. Development with GTK+ can be done with various programming languages: c, python, rust... The main reason why I tested the implementation of the Vala programming language was that Gnome developed it.

For the installation, I used the DNF utility with the following commands to install the packages necessary for the operation of the development in Vala

$sudo dnf groupinstall "Development Tools" "Development Libraries"
$ sudo dnf install vala

The first command installs the tools that are essential to perform tasks such as installing packages from source code.

The second command only installs the Vala package.

To test the written program we will need to use the Valac compiler and then run it as a simple executable in Linux.

$valac --pkg gtk+-3.0 test.vala 
$ ./test

(test:6198): GLib-GObject-CRITICAL **: 14:34:11.454: g_value_set_boxed: assertion 'G_VALUE_HOLDS_BOXED (value)' failed 

The error is about the implementation of Vala in Fedora, I don't have an answer of this but in other Linux distributions this is not show.

If you want to use WebKit2GTK+ Extensions then you need to compile it.

valac test.vala  --pkg gtk+-3.0 --pkg webkit2gtk-4.0

Is a more easy way to developm application but you need to know well how to deal with GTK and GObject structure.