Execute the hostname command to modify the hostname of the current system# hostname newhost Modify /etc/sysconfig/network so that the new host name is used next time you starthostname=newhost Modify /etc/hosts. If it is not modified, services such as apache that need to resolve the host name will not be started.127.0.0.1 newhost localhost Finally, the host name in the command line prompt has not changed yet. If you care a lot, just log in again.