This is post for those who are new to Red Hat Linux or Oracle Enterprise Linux (OEL) and wish to change hostname .

How to find hostname on Linux/OEL ?
Use command “hostname” to find host name of Linux

How to change hostname on Linux/OEL ?

  1. Open file /etc/sysconfig/network  using editor like vi , nano or ed
  2. Change entry HOSTNAME=XXXXXX to
    HOSTNAME=New_Host_Name
  3. Restart xinetd service or reboot Linux/OEL
    Restart xinetd service xinetd restart
    Reboot Linux reboot
  4. If you have defined hostname resolution in hosts file then change entry in /etc/hosts 
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