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"What is GNU Screen? it is a terminal multiplexer and you can run multiple console-based applications simultaneously. The best part of it is that you can leave it running on remote machines and come back to pick up your console sessions. It’s like VNC or Remote Desktop but for UNIX console." "With that feature GNU Screen is indispensable when it comes to do console sessions on low speed connection. If you got disconnected then all you have to do is reconnect and continue with your work. Or if you do something that takes a long time to finish, say maybe archiving and backing up many files, then simply launch it from your GNU Screen session then detach from it and disconnect. Later on you can come back and reattach again to check the progress."
The article is a very good tutorial about what really is an essential tool for *nix systems administrators. With most servers managed remotely across the net having the ability to run things in the background and rejoin the session later is vital.
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