To modify the mapping between Linux hostname and IP

Linux Host version:

Distributor Id:ubuntu
Description:ubuntu 14.10
release:14.10

First, modify the Linux host name

1. Use the hostname command to view the current host name

　　

2. Save after modifying hostname in/etc/hostname file (some versions modify hostname in/etc/sysconfig/network)

Second, modify the host name and IP mapping

To modify the mapping between host name and IP in/etc/hosts

　

Reboot the system after completing these two parts.

Then use the command to ping the new host name

The mapping between the host name and the IP was found to have been modified.

To modify the mapping between Linux hostname and IP