Host name is defined in file /etc/sysconfig/network in linux ,so edit this file
1. vi /etc/sysconfig/network
2. NETWORKING=yes
HOSTNAME= NewHostname.localdomain
3. save
4. reboot
5. after reboot run the command hostname to check new hotname is in effect
1. vi /etc/sysconfig/network
2. NETWORKING=yes
HOSTNAME= NewHostname.localdomain
3. save
4. reboot
5. after reboot run the command hostname to check new hotname is in effect