Set Hostname2019/05/07

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

# show current hostname

[root@localhost ~]#

hostname

localhost.localdomain

# change hostname

[root@localhost ~]#

hostname dlp.srv.world

[root@localhost ~]#

hostname

dlp.srv.world

# just changed

[2]	Change hostname permanently.

[root@localhost ~]#

hostnamectl set-hostname dlp.srv.world

# show state

[root@localhost ~]#

hostnamectl

   Static hostname: dlp.srv.world
         Icon name: computer-vm
           Chassis: vm
        Machine ID: 99cf1726edcc41bc9cb935dec77253e7
           Boot ID: 767f2c77b33b45a28638079674895701
    Virtualization: kvm
  Operating System: Fedora 30 (Server Edition)
       CPE OS Name: cpe:/o:fedoraproject:fedora:30
            Kernel: Linux 5.0.10-300.fc30.x86_64
      Architecture: x86-64

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