Storage Location of Add-Ons Logfiles


I‘m running a couple of add-ons in HomeAssistant. The Add-Ons usually create their own logfile which can be viewed in HA in settings - Add-Ons - addonname - Logfile
However, the displaying of the logfile seems to truncated at some point so I can see only a couple of minutes of logging activity.
Where in the OS filesystem are the add-on logfiles stored so that I can view their whole content via terminal?