Fedora 32
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Set Hostname2020/05/01

If you would like to change Host Name of your System, set like follows.
[1] Change hostname. (but when System restarted, it will be back).
# show current hostname

[root@localhost ~]#
# change hostname

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

[root@localhost ~]#
# changed

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

[root@localhost ~]#
   Static hostname: dlp.srv.world
         Icon name: computer-vm
           Chassis: vm
        Machine ID: 2e76f065c00f4c0bb2cc851bf5faf697
           Boot ID: 8379ce68e17f407d843a2d232d34b2c4
    Virtualization: kvm
  Operating System: Fedora 32 (Server Edition)
       CPE OS Name: cpe:/o:fedoraproject:fedora:32
            Kernel: Linux 5.6.6-300.fc32.x86_64
      Architecture: x86-64
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