Open your Terminal and run the following Commands as needed.
(Do not include the $)
provides a continually updated list of running processes, and allows you to manipulate them.
provides a list of open files and the processes that opened them.
$ free -m
shows you how much memory is available.
provides information about current virtual memory use.
$ df -h
displays available disk space on mounted filesystems.
displays the memory map of a process.
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