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Newbie here. How can I view the output of a currently running process without restarting the process? Using the ps command to obtain the PID, can I use it, somehow, to look at the output of that process (kinda like a window to see what its doing)?
No, not as a generic rule; some processes, like dd, will let
you get some stats by sending them a special signal. But that's
implementation dependent, not a generic feature. You should be
able to see whether or not a program offers that kind of feature
from its man-page(s).
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