htop Is much more attractive than the top program you generally hear talked about, and is more functional IMO. It does everything you need from a system monitor, plus has an exceptionally lightweight profile of its own. And since it has an easy to understand interface, its ideal for the new and experienced user to manage the workload or troubleshoot hung processes. There’s no need to do ps aux or any of those cryptic tree commands just start htop. It should be available from your distributions repositories alternatively you can download it from sourceforge .