Linuxintermediate1 min read

systemd

N/A

systemd

systemd · N/A · systemd · SIS-tem-dee · system daemon · init system · Linux · services · boot · adminLinuxsystem daemon init system

/SIS-tem-dee/

Also known as: system daemon, init system

Last updated August 8, 2026

Definition

systemd is a widely used Linux init system and service manager that starts the OS user space and controls background services.

Real-World Example

systemctl restart nginx asks systemd to stop and start the web server service cleanly.

References

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