This is the recommended command-line upgrade method.
$ dnf check-update $ sudo dnf upgrade
or
sudo dnf upgrade --refresh
about dnf upgrade
Aliases: up
Deprecated aliases: update, upgrade-to, update-to, localupdate
Clean-up packages
You can safely remove packages no longer in use with:
$ sudo dnf autoremove
You can see duplicate packages (packages with multiple versions installed) with:
$ sudo dnf repoquery --duplicates
Some packages that are still on your system may no longer be in the repositories. To see a list of these packages do:
$ sudo dnf list extras
If you see a package you do not need, or use, you can remove it with:
$ sudo dnf remove $(sudo dnf repoquery --extras --exclude=kernel,kernel-\*)
Old kernels remain even after dnf autoremove.
The script below works whenever Fedora updates a kernel, and does not depend upon a system upgrade.
#!/usr/bin/env bash
old_kernels=($(dnf repoquery --installonly --latest-limit=-1 -q))
if [ "${#old_kernels[@]}" -eq 0 ]; then
echo "No old kernels found"
exit 0
fi
if ! dnf remove "${old_kernels[@]}"; then
echo "Failed to remove old kernels"
exit 1
fi
echo "Removed old kernels"
exit 0
Clean-up old symlinks
There may be some dangling symlinks in the filesystem after an upgrade. You can clean the dangling links by installing the symlinks utility and deleteing the old links.
$ sudo dnf install symlinks
Once the utility is installed you can audit for broken symlinks like shown below. -r means recursive.
$ sudo symlinks -r /usr | grep dangling
After you verify the list of broken symlinks you can delete them like shown below. -d means delete.
$ sudo symlinks -r -d /usr
ref:
• DNF System Upgrade
• DNF Command Reference
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