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Mirroring Terminal on Linux [closed]

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/

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