jimint wrote:How do you uninstall and reinstall the NIC drivers in Cassandra.It's an onboard RealTek 8139.
There are no 'drivers' in Linux. What you mean are 'kernel modules'. If the card is supported --which means: the kernel recognises it and knows how to 'talk to it'-- it should work right away. Only thing you have to do is to (re?)configure it in your system preferences.
Besides: "removing and adding stuff again" or "uninstall something and install it again: this will fix it" may have worked fine on Windows. Here it's a stupid tactic and will fail in 99.99% of the cases because *this pseudo-trick does usually not work* ... The settings are kept elsewhere and not inside a package.
So if something doesn't work: Uninstalling and installing it again will only load the not working settings again, it will not change anything. It is therefore better if you describe your problems in details so we others can tell you what you need to do. 'Uninstall + reinstall' won't help you here.