Easily get log messages of a specific service from the current boot (with journalctl)

Although systemd improved greatly alot of things compared to system V, logs can become messy.
You can very easily get

Find easily a package with dnf or yum providing a library, header ...

Although it's not always well known, dnf (and yum) supports a very interesting and powerful command: provides.
For instance, it's very useful to fix issue like

Fix Font issue after Fedora Upgrade

After upgrading Fedora, you may face fonts issue because the default value has changed, but has not been updated during the upgrade process.

Restore previous mouse acceleration behavior on Fedora 22+

After upgrading Fedora, you may face new mouse acceleration behavior, that looks

Upgrade GNU/Linux Fedora from 21/22 to 23 (with dnf)

Like explained in this article, FEDora UPgrader (fedup) is deprecated since Fedora 21, where DNF system upgrade plugin became the recommended method to upgrade Fedora.

This article will explain how to use dnf with its system upgrade plugin, to Upgrade from Fedora 22 to