:PROPERTIES:
:ID:       e108b31b-23c1-47fe-a794-84e41bc45044
:END:
#+title:  daemon
#+filetags: :SYSTEM-INFORMATION:system:basics:

In multitasking computer[[id:5fada795-19a3-4ba6-97c0-0b70bd728a2f][operating systems]], a daemon (/ˈdiːmən/ or /ˈdeɪmən/)[1] is a computer program that runs as a background process, rather than being under the direct control of an interactive user. Traditionally, the process names of a daemon end with the letter d, for clarification that the process is in fact a daemon, and for differentiation between a daemon and a normal computer program. For example, syslogd is a daemon that implements system logging facility, and sshd is a daemon that serves incoming [[id:422e07f8-c888-460f-849e-76d451946045][ssh]] connections.