The ps command is used to view currently running processes on the system. It helps us to determine which process is doing what in our system, how much memory it is using, how much CPU space it occupies, user ID, command name, etc .
The ps command may display different results for different systems because it displays information about the currently running process of a system.
Look at the above snapshot, 4 columns are displayed as the output.
ps command supports 3 types of usage syntax style