Top is the realtime monitor of the running processes in a Linux system. To log the top running processes, use the following command: top -b -n 1.
-b = Batch mode operation - Starts top in ’Batch mode’, which could be useful for sending output from top to other programs or to a file.
-n = Number of iterations limit as: -n number specifies the maximum number of iterations, or frames, top should produce before ending.