By Ji m

I'm a freelance blogger who started using Ubuntu in 2007 and wishes to share my experiences and some useful tips with Ubuntu beginners and lovers. Please comment to remind me outdated tutorial! And, notify me if you find any typo/grammar/language mistakes. English is not my native language. Contact me via Buy me a coffee:


  1. Why write scripts when there is a simple solution for picture windows logon screen?

    sudo apt-get install xserver-xephyr

    lightdm – test-mode

    1. Thanks for you tip. But you need to first switch to user lightdm in terminal if you’ve changed the LightDM appearances.

  2. You can try this:

    gnome-screenshot -d 10

    you don’t need to install any thing just enter the command and lock the screen, the screen will be shot within 10 seconds after the command is executed.

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