There was therefore far more maintenance to be done before the internet. Bug fixes had to be manually applied for example. If you mean that software didn't ch

There was therefore far more maintenance to be done before the internet. Bug fixes had to be manually applied for example. If you mean that software didn't change unless you manually altered it, well there's also OK maintenance. Unix systems would fill the disk with logs unless you cleared them out manually or wrote custom scripts to do so. Windows would need to be at least rebooted and more likely reinstalled periodically.