Change the hostname permanently without restarting Linux

In Linux, do not restart and permanently modify hostname1. if you only modify the hostname, run the following command [java] hostnamenewHostname: Note: This modification method is only valid currently. after the server is restarted, the hostname will become invalid, return to the original hostname. 2. if permanent... in Linux, do not restart and change the hostname permanently. 1. if you only modify the hostname, run the following command [java] hostname newHostname: Note: This modification method is only valid currently. after the server is restarted, the hostname will become invalid, return to the original hostname. 2. if you need to permanently modify the hostname, run the following command [java] vi/etc/sysconfig/network:
Modify the HOSTNAME. However, this method takes effect after restart. 3. the above two methods can be used to permanently modify the hostname without restarting, so that the current modification will take effect without restarting and will take effect after the restart.