matrix screensaver for ubuntu.
1-) sudo apt-get install cmatrix then you should edit the bashrc 2-) gedit ~/.bashrc then add this alias at the bottom 3-) alias lock=‘cmatrix -a -b; gnome-screensaver-command -l’ -a: Asynchronous scroll -b: Bold characters on 4-) Now execute “. ~/.bashrc” in your terminal 5-) enter now “lock” and enjoy it