Fedora 23
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Set Hostname2015/11/05

This is the example for setting Hostname of your system.
[1] Change hostname. (but if rebooting, it will be back).
# show current hostname

[root@localhost ~]#
# change hostname

[root@localhost ~]#
hostname dlp.srv.world

[root@localhost ~]#
# just changed

[2] Change hostname permanently.
[root@localhost ~]#
hostnamectl set-hostname dlp.srv.world
# show status

[root@localhost ~]#
   Static hostname: dlp.srv.world
         Icon name: computer-vm
           Chassis: vm
        Machine ID: b5d20ad0a65044d8aae885212e819867
           Boot ID: c4ffe6165dca44ef964df033ab6f173a
    Virtualization: kvm
  Operating System: Fedora 23 (Server Edition)
       CPE OS Name: cpe:/o:fedoraproject:fedora:23
            Kernel: Linux 4.2.5-300.fc23.x86_64
      Architecture: x86-64
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