Each process running on a Linux system has various attributes, such as PID, PPID, the CPU time consumed by the process, the physical and virtual memory consumption of the process, and so on. All of this information can be found in the process table of the operating system. When working in a multi-user environment, it might happen that a process started by a user consumes the CPU cycle excessively. Hence, it is essential to manage processes and to manage computer resources efficiently. For this, we need to identify the types of processes and change their priority levels, or even terminate them if required. This section describes the use of various commands that are helpful for viewing processes and their attributes.