When giving a talk I usually use two screens: One is the wall showing the presentation to the audience, the other one is my Laptop screen with a mirror of the presentation, my speakernotes etc. During the talks I pretty often do demos using a terminal. This requires that I turn around to check at the wall if everything works correctly. To avoid this I would like to have two terminal window, one on my laptop screen where I am typing and a mirror of it which is shown to the audience at the second screen. How can I do this?
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Answer
Take a look to the screen program. It does perfectly what you are trying to do. The following link gives a simple example of screen usage:
Start a new screen session with session name:
screen -S <name>
list running sessions/screens:
screen -ls
Attach to a running session:
screen -x
Attach to a running session with name:
screen -r session_name
Screen quick reference: http://aperiodic.net/screen/quick_reference
More links:
https://www.rackaid.com/blog/linux-screen-tutorial-and-how-to/