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What is the default type of systemd service?
Type=simple (default): systemd considers the service to be started up immediately. The process must not fork. Do not use this type if other services need to be ordered on this service, unless it is socket activated. Type=forking: systemd considers the service started up once the process forks and the parent has exited.
What does the systemd timesync status command mean?
The systemd timesync’s status indicates whether systemd has initiated an NTP service. Because you have not yet started systemd NTP, the timesync-status command returns no data: Failed to query server: Could not activate remote peer. But a straight status request provides some important information.
How to check if a service is active in systemd?
For instance, to check to see if a unit is currently active (running), you can use the is-active command: systemctl is-active application.service This will return the current unit state, which is usually active or inactive. The exit code will be “0” if it is active, making the result simpler to parse in shell scripts.
How to start a systemd service as a non-root user?
To start a systemd service, executing instructions in the service’s unit file, use the start command. If you are running as a non-root user, you will have to use sudo since this will affect the state of the operating system:
What do you need to know about systemd boot?
It provides a graphical menu to select the entry to boot and an editor for the kernel command line. systemd-boot supports systems with UEFI firmware only.
How does the boot manager work with systemctl?
The boot manager integrates with the systemctl command to implement features such as systemctl reboot –boot-loader-entry=… (for rebooting into a specific boot menu entry, i.e. “reboot into Windows”) and systemctl reboot –boot-loader-menu=… (for rebooting into the boot loader menu), by implementing the Boot Loader Interface.
What does type = Idle do in systemd?
Type=idle: systemd will delay execution of the service binary until all jobs are dispatched. Other than that behavior is very similar to Type=simple. See the systemd.service (5) § OPTIONS man page for a more detailed explanation of the Type values.