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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.
- **Exec** : similar to simple but waits a bit more for the service to be started successfully
- **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
**Exec** is recommended by `man systemd.service` for long-running services.
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