Support for Ubuntu and Windows

[duksis]

Windows Command prompt command for locking the machine

C:\Users\duksis> rundll32.exe user32.dll,LockWorkStation

On Ubuntu gnome possibly

$ gnome-screensaver-command -l

sources: https://askubuntu.com/questions/184728/how-do-i-lock-the-screen-from-a-terminal https://www.youtube.com/watch?v=-bl8iPgt-2w