Network infrastructure is the backbone of your computer’s connectivity and therefor should be stable, reliable and very little, if no downtime. If it isn’t the case, can you imagine getting disconnected from the server while you are remotely running your scripts via ssh? Not only that the script has to be re-run, but might damage other important files as well.
If you are in a situation where you need something to remain connected to the server, you can use screen. screen is a full-screen window manager that multiplexes a physical terminal between several processes typically interactive shells). When screen is called, it creates a single window with a shell in it (or the specified command) and then gets out of your way so that you can use the program as you normally would. Then, at any time, you can create new (full-screen) windows with other programs in them (including more shells), kill existing windows, view a list of windows, turn output logging on and off, copy-and-paste text between windows, view he scrollback history, switch between windows in whatever manner you wish, etc. All windows run their programs completely independent of each other. Programs continue to run when their window is currently not visible and even when the whole screen session is detached from the user’s terminal. Read the rest of this entry »
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