fedora: Lockdown a kernel version

Fedora typically keeps 3 latest kernel versions. However, what if you want to keep an old specific kernel version which is known to work well with your system? First, we need to install a dnf plugin that allows us to keep a specific version of any package:

sudo dnf install python3-dnf-plugins-extras-versionlock

Lets find all available kernel versions for your system:

sudo dnf list kernel --showduplicates

Install that specific version of the kernel:

sudo dnf install kernel-5.3.7-301.fc31

And lock it:

sudo dnf versionlock add kernel-5.3.7-301.fc31

To remove the lock:

sudo dnf versionlock delete kernel-5.3.7-301.fc31

fedora: Install accidentally removed sqlite package

If sqlite package (or, for example, sqlite-libs package) was accidentally removed from your system, you can't reinstall it using dnf or yum because they depend on it. To fix this problem, download missing rpm package from https://admin.fedoraproject.org/pkgdb/package/rpms/sqlite/. From the downloaded file location, run command:

rpm2cpio sqlite-libs-3.11.0-3.fc23.x86_64.rpm | cpio -idmv

It will create usr folder with extracted files. Run next command to copy them to the right location:

sudo cp -R usr/ /

Pay attention to the package architecture. You should be able to use dnf again. It would be good to reinstall missed package with dnf again:

sudo dnf --best --allowerasing install sqlite-libs