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2) Instantiate a GNU screen or tmux session on a server that will not be turned off for a couple of days.
I believe we need a terminal multiplexer; many a times I have interrupted long running jobs when I have closed a terminal window by mistake and lost the session, or that I have to disconnect my laptop from the server and I lose the session. These multiplexers, when instantiated on the server, allow us to spawn the measurement process under their tree. We can then disconnect from the server and reconnect at a later stage. (I personally prefer tmux. However, screen is equally good. Here is some useful documentation on tmux.)
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