Description: Unit reloading refers to reloading the configuration of a unit without stopping it. In the context of modern operating systems that support service management, this action allows changes in the configuration of a service or unit to be applied without interrupting its operation. This is particularly useful in production environments where continuous service availability is critical. Unit reloading is performed using specific commands that instruct the system to read the configuration files associated with a unit again, allowing changes to take effect immediately. This process is more efficient than completely restarting the service, as it minimizes downtime and reduces the impact on end users. Additionally, unit reloading can include updating configuration parameters, re-reading environment files, or reconfiguring associated resources, all without losing the current state of the running service.