WattMaster WM-WCC3-TGD-01B - Manual (Page 100)

2. INITIATING THE SYSTEM
WCC III Technical Guide 2-32
Introduction to Processes
Every program, process or command running on a Linux system
is a process. At any time, there are dozens of processes running
on your system, some for programs that you are interacting with
graphically, some for commands that you have started at a shell
prompt, some for servers running in the background, and some that
perform system tasks. Every time you type a command like ls or vi
at the shell prompt, a new process is created, only to exit as soon
as its job is done.
Each process is identifi ed by a unique ID, known as the PID or
process ID. Each is owned by a single user and is a member of
multiple groups, which determine the privileges that the process
has. And each has a priority (also known as the nice level), which
controls how much CPU time the process can use up on a busy
system. Almost every process has a parent, which is the process
that started it, and from which it inherits ownership, priority, and
other settings. A process will run until it chooses to exit, or until it
is killed by a signal from another process.
The Running Processes Module
This module can be used to view, kill, re-prioritize, and run
processes on your system. When you enter it for the fi rst time from
the System category, the main page will display a tree of processes
as shown below.
WARNING: Any unauthorized changes to the Webmin
Bootup and Shutdown module will void any and all warranties
written or implied that apply to the basic operation of the WCC
III – MCD system.
Webmin Administration - Limited Version