Another example is the X Window service, which is anything but in the background: it takes over your screen, keyboard and pointing device. A user application with a GUI could have a service built into it: for instance, a file-sharing application. For example, the NFS port mapping service is provided as a separate portmap service, which is implemented as the portmapd daemon.Ī service doesn't have to be a daemon, but usually is. The word daemon for denoting a background program is from the Unix culture it is not universal.Ī service is a program which responds to requests from other programs over some inter-process communication mechanism (usually over a network). It is detached from the keyboard and display of any interactive user. At a particular instant of time, it can be either running, sleeping, or zombie (completed process, but waiting for it's parent process to pick up the return value).Ī daemon is a background, non-interactive program. If you're wondering why *NIX has a command named service, it is just used to run init scripts (shorthand for initialization scriptrunlevel). Services - In Windows, daemons are called services. They perform certain actions at predefined times or in response to certain events. They are the processes which run in the background and are not interactive. Daemons - Daemon does not stand for Disk and Execution Monitor ( ).
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