Category Archives: Linux Maintenance

GNOME : gsettings

gsettings configurations :

GSettings — High-level API for application settings

Set the screen blank timeout settings to 30 min
Timeout for blanking the screen (seconds; 0 = never):
gsettings set org.gnome.desktop.session idle-delay 1800

Set the Screensaver lock timer
Timeout for locking the screen after blanking (seconds; 0 = instant):
gsettings set org.gnome.desktop.screensaver lock-delay 0

Upgrading Fedora 25 Workstation to Fedora 26

Using the command line

If you’ve upgraded from past Fedora releases, you are likely familiar with the dnf upgrade plugin. This method is the recommended and supported way to upgrade from Fedora 25 to Fedora 26. Using this plugin will make your upgrade to Fedora 26 simple and easy.

1. Update software and back up your system

Before you do anything, you will want to make sure you have the latest software for Fedora 25 before beginning the upgrade process. To update your software, use GNOME Software or enter the following command in a terminal.

sudo dnf upgrade –refresh
Additionally, make sure you back up your system before proceeding. For help with taking a backup, see the backup series on the Fedora Magazine.

2. Install the DNF plugin

Next, open a terminal and type the following command to install the plugin:

sudo dnf install dnf-plugin-system-upgrade
3. Start the update with DNF

Now that your system is up-to-date, backed up, and you have the DNF plugin installed, you can begin the upgrade by using the following command in a terminal:

sudo dnf system-upgrade download –releasever=26
sudo dnf system-upgrade reboot

Reference Fedora Mag

Centos yum plugin priorities


You can disable priorities in
/etc/yum/pluginconf.d/priorities.conf set enabled to 0

A Cautionary Note

Note: The upstream maintainer of yum, Seth Vidal, had the following to say about ‘yum priorities’ in September 2009:

Gosh, I hope people do not set up yum priorities. There are so many things about
priorities that make me cringe all over. It could just be that it reminds me of
apt ‘pinning’ and that makes me want to hurl.
This matter was discussed in more depth in the mailing list thread starting here. The Repositories article noted in that thread, which discusses the exclude and includepkg options for yum, is a better place to start in understanding priorities.

The primary concern is that priorities is heavy handed over removing packages from the transaction set. It makes it difficult to readily determine what packages are being ignored and why. Even so, it is very flexible and can be extremely useful to provide the largest available list of packages.