CentOS 7 notes

Optical media is for some reason mounted in /run/media/root.
Disable the login screen user list. Works with all DE's.
2.1. Create a gdm database for machine-wide settings in /etc/dconf/db/gdm .d/00-loginscreen:

2.2. [org/gnome/login-screen]

# Do not show the user list

disable-user-list=true
2.3. Run # dconf update.
Gnome Shell Extensions should be installed in /usr/share/gnom e-shell/extensions.
3.1. Enabline machine-wide extensions in /etc/dconf/db/local.d/00-extensions.
3.2. Run dconf update after every tweak.
Gnome Shell Extension plugin for Firefox: https://www.centos.org/forums/viewtopic.php?f=47&t=47513.
Enabling the Ctrl-Alt-Backspace Shortcut:
5.1. Create a local database for machine-wide settings in /etc/dconf/db/local.d/00-inputsources.
5.2. [org/gnome/desktop/input-sources]

# Enable Ctrl-Alt-Backspace for all users

xkb-options=['term inate:ctrl_alt_bksp']
5.3. Override the user's setting and prevent the user from changing it in

/etc/dconf/db/local.d/locks/input-sources.
5.4. # Lock the list of enabled XKB options

/org/gnom e/desktop/input-sources/xkb-options
5.5. dconf update
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