OS tools
All major operating systems come with a more or less standard set of tools that can extract and sometimes visualize important pieces of performance-related information from the network, hardware, and the OS itself. Here, we will mention a few of the most useful grouped by the OS that they come bundled with.
Unix and Linux
In UNIX and Linux-based operating systems, there are a lot of useful tools available as shell-executable commands. These tools will assist in monitoring system activities. The most common one might be the top command, which will give an interactive and real-time feed of processor activity and memory usage. Its output can be adapted to most needs, so it is, as it always is with UNIX-based commands, a good idea to read through ...
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