3 Resources/Systemd/Unit types.md


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---
tags:
  - systemd
  - linux
---
The `Type` directive is specified within the `Service` section. There are 6 different types;
- **Simple**: The default if `Type` nor `Busname` are specified.
- **Forking**: Used when the parent process exits immediately due to it forking. Systemd will know it's still running even though it exited.
- **Oneshot**: When the process is short-lived and doesn't need to keep running. Systemd will wait on the process before starting other units.
- **Dbus**: The process will be registered on the D-Bus bus.
- **Notify**: Systemd will expect a notification from the process to signal it has started up blocking the execution of other units until the signal is received.
- **Idle**: Service will not run ufntil all jobs are dispatched. #clarify

https://www.digitalocean.com/community/tutorials/understanding-systemd-units-and-unit-files#unit-specific-section-directives