Daemons
A daemon is a program that runs as a "background" process (without a terminal or user interface), commonly waiting for events to occur and offering services. A good example is a web server that waits for a request to deliver a page, or a ssh server waiting for someone trying to log in. While these are full featured applications, there are daemons whose work is not that visible. Daemons are for tasks like writing messages into a log file (e.g. syslog
, metalog
) or keeping your system time accurate (e.g. ntpd
). For more information see man 7 daemon
.
Managing daemons
In Arch Linux, daemons are managed by systemd. The systemctl command is the user interface used to manage them. It reads <service>.service files that contain information about how and when to start the associated daemon. Service files are stored in /{etc,usr/lib,run}/systemd/system
. See systemd#Using units for details.
List of daemons
See Daemons List for a list of daemons with the name of the service and legacy rc.d script.
See also
- systemd
- Examples for writing Systemd/Services