2
votes
1answer
17 views

A tool for monitoring changes in region of the screen

I'd like to monitoring changes in a region of a window, this windows is showing a virtual box machine, and I need to get a log with a timestamp of that changes.
36
votes
6answers
57k views

How can I monitor the memory usage?

I have used top to see the memory usage at the moment. But I would like to monitor the memory usage over a period of time. E.g start monitoring and then execute a few commands, and final stop the ...