How to configure embedded Linux IP __linux

1. ifconfig ethx IP netmask mask will be lost after reboot,
The way to modify the configuration file can be restarted to maintain IP, search on the internet, found in the Linux etc no sysconfig files, later found to be this reason. /etc/sysconfig/* is the Red Hat system under the Service initialization environment configuration file, I use the Ubuntu does not have this folder, can only be the location of each service storage, such as CentOS in the/etc/sysconfig/ Network corresponds to the/etc/network/interfaces file in Ubuntu ...
Then use the following command to make the network settings effective:
sudo/etc/init.d/networking restart