This is a list of some utils command for linux environment XFCE4:

# Monitoring modifications of XFCE PubSub daemon
xfconf-query -c xfce4-desktop -m

# Read value from XFCE PubSub daemon (Get actual scale)
xfconf-query -c xsettings -p /Gdk/WindowScalingFactor

# Write value to XFCE PubSub daemon (Set scale to 200%)
xfconf-query -c xsettings -p /Gdk/WindowScalingFactor -s 2

# Write value to XFCE PubSub daemon (Set theme to XFCE4 Window Manager)
xfconf-query -c xfwm4 -p /general/theme -s Default-xhdpi

# Kill PubSub deamon XFCE4
pkill xfsettingsd

# List all channels and properties of PubSub
xfce4-settings-editor

References

https://git.xfce.org/xfce/xfconf/tree/docs/spec/perchannel-xml.txt

https://github.com/winunix/kiosk-mode-xfce4