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Components of some Linux desktop environments that are daemons include D-Bus, NetworkManager (here called unetwork), PulseAudio (usound), and Avahi.. In multitasking computer operating systems, a daemon (/ ˈ d iː m ən / or / ˈ d eɪ m ən /) [1] is a computer program that runs as a background process, rather than being under the direct control of an interactive user.
A daemon is a type of background process designed to run continually in the background, waiting for event(s) to occur or condition(s) to be met. [9] When launched with the daemon function, daemons are disassociated from their parent terminal. [10]
A malicious client can forge this and gain access, as the rlogin protocol has no means of authenticating the client is running on a trusted machine. It also cannot check if the requesting client on a trusted machine is the real rlogin client, meaning that malicious programs may pretend to be a standard-conforming rlogin client by using the same ...
Web server daemon. inetd [4] Listens for network connection requests. If a request is accepted, it can launch a background daemon to handle the request, was known as the super server for this reason. Some systems use the replacement command xinetd. lpd: The line printer daemon that manages printer spooling. nfsd [3]
runit is an init and service management scheme for Unix-like operating systems that initializes, supervises, and ends processes throughout the operating system.Runit is a reimplementation of the daemontools [3] process supervision toolkit that runs on many Linux-based operating systems, as well as BSD, and Solaris operating systems.
systemd is the first daemon to start during booting and the last daemon to terminate during shutdown. The systemd daemon serves as the root of the user space's process tree; the first process (PID 1) has a special role on Unix systems, as it replaces the parent of a process when the original parent terminates. Therefore, the first process is ...
The ESD daemon will be spawned automatically by libesd if a daemon is not already present. Data is then either read or written to the ESD daemon. For an ESD client local to the machine that the ESD daemon is running on, the data is transferred through a local socket, then written to the sound device by the ESD daemon.
It is sometimes desirable to intentionally orphan a process, usually to allow a long-running job to complete without further user attention, or to start an indefinitely running service or agent; such processes (without an associated session) are known as daemons, particularly if they are indefinitely running.