Ans: The standard command to see this is [ps]. But [ps] only shows you the snapshot of the processes at that instance. If you need to monitor the processes for a certain period of time and need to refresh the results in each interval, consider using the [top] command.
$> ps –ef
If you wish to see the % of memory usage and CPU usage, then consider the below switches
$> ps aux
If you wish to use this command inside some shell script, or if you want to customize the output of [ps] command, you may use “-o” switch like below. By using “-o” switch, you can specify the columns that you want [ps] to print out.
$>ps -e -o stime, user, PID, args, %mem, %cpu
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