Set Hostname2022/05/20

	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 ~]#

hostname

localhost.localdomain

# change hostname

[root@localhost ~]#

hostname dlp.srv.world

[root@localhost ~]#

hostname

dlp.srv.world

# changed

[2]	Change hostname permanently.

[root@localhost ~]#

hostnamectl set-hostname dlp.srv.world

# show settings

[root@localhost ~]#

hostnamectl

 Static hostname: dlp.srv.world
       Icon name: computer-vm
         Chassis: vm 🖴
      Machine ID: 321f1db9fb144f9d925a5bfa609bea38
         Boot ID: 1bc140ebef3b431787f5401127e53b98
  Virtualization: kvm
Operating System: Fedora Linux 36 (Server Edition)
     CPE OS Name: cpe:/o:fedoraproject:fedora:36
          Kernel: Linux 5.17.5-300.fc36.x86_64
    Architecture: x86-64
 Hardware Vendor: Red Hat
  Hardware Model: KVM

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