Eli5: How do they make the fake OS for computers in movies and are they functional?
In: Technology
> the fake OS
They just play a video/greenscreen a video over the monitor. Alternatively, they use linux in terminal mode, install [tmux](https://www.perl.com/article/an-introduction-to-tmux/) and then just start up visually interesting programs with mucho scrolling numbers like [htop](https://htop.dev/screenshots.html) or [install a few packages](https://images.contentful.com/hspc7zpa5cvq/6p7v2EFSTuSw860Y0EUgeU/449080a2f1bd32910ce2e23358381bca/npm_install_express_loglevel_silly.gif).
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