Ifconfig in Ubuntu 18.04 is not working [duplicate]
Recently I have switched from Ubuntu 16.04 to 18.04 and I have found that ifconfig is not working in Ubuntu 18.04.
So what alternative does Ubuntu 18.04 offer and what is the reason for removing/replacing ifconfig?
The ifconfig command and also the route command are obsolete and are replaced by the ip command which comes with the iproute2 package.
There are some more tools that got replaced. A good starting point to get an overview is here.