In the image below we used the command top which automatically sorts by CPU usage
In the image below we used the command htop and F6 to sort by memory usage.
In this image, we used the top command, then I used the command o then I typed in the following PID, %CPU, %MEM to sort by PID CPU usage and Memory usage.
Closing a process in htop is simple. You select the process you want to close and then you type the command F9. Then the side menu will come up and you will select sigkill to kill the process.
