Give a command that returns the total number of processes running on your system.

To return the total number of processes running on a Linux/Unix system, you can use the following command in the terminal:

ps aux | wc -l

This will display the number of processes currently running on the system.

Alternatively, you can use the following command to display the number of running processes in real-time (updated every few seconds):

watch "ps aux | wc -l"

This will continuously display the number of processes running on the system until you exit the watch command.