Change hostname on CentOS

Change the hostname machine running CentOS.

• Login with putty.exe / or SSH
  
• Goto : cd /etc/sysconfig/
• Type vi / nano network
• Press i (for VI) on the keyboard and change the HOSTNAME to your preferred servername
• Press ESC on the keyboard
• Save the configuration by :wq! (For VI) or control x and save Y (for nano)
  
• Reboot