If you have let slip your patching routine with Ubuntu you can find yourself in a position where you can't get any updates or upgrade to the next release. Backup your existing sources.list file: sudo cp /etc/apt/sources.list /etc/apt/sources.list.backup Update the sources to

Find the interface you want using either command: netstat -i ifconfig Update the interface with your config (in this example eth0): sudo ifconfig eth0 10.1.1.6 netmask 255.255.255.0 Now set the default gateway using the following command (same interface as before): sudo route add default