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SystemD
SystemD is an init system for Linux systems. It is used for service configuration and startup.
Usage
Run Command on Boot
To run a command (in this case /bin/bash /root/run.sh) create the following
file at /etc/systemd/system/ with a name ending on .service.
In this case it is called unturned.service.
[Unit]
Description=Description of the service
[Install]
WantedBy=multi-user.target
[Service]
ExecStart=/bin/bash /root/run.sh
Type=simple
For Proxmox you can add the following line under the [Unit]
section to make sure the service is started after Proxmox has finished
initializing.
After=pve-guests.service
Such a service can be started by running:
sudo systemctl start unturned
Alternatively it can be enabled to start at every boot by running:
sudo systemctl enable unturned
Start/Stop/Enable/Disable a service and Retrieve its Logs
Services can be started by running systemctl start <service-name>.
They respectively can be stopped by replacing the start
keyword for stop.
To start the service after boot it has to be enabled.
This works accordingly with the keyword enable.
The disable keyword stops the service from starting automatically.
Logs of the last start of the service can be found by running systemctl status <service-name>.
Retrieving the SystemD Logs
SystemD logs can easily be found using the journalctl command.
One of the most notable usages of the command is for checking the logs of the previous boot.
This can be achieved by running the following command.
journalctl -b-1