Set Hostname2023/06/15

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

# show current hostname

root@debian:~#

hostname

debian

# change hostname

root@debian:~#

hostname dlp

root@debian:~#

hostname

dlp

# just changed

[2]	Change hostname permanently.

root@debian:~#

hostnamectl set-hostname dlp.srv.world

# show settings

root@debian:~#

hostnamectl

 Static hostname: dlp.srv.world
       Icon name: computer-vm
         Chassis: vm
      Machine ID: 43401112bd4a4907802ec262beae4c1e
         Boot ID: b0fb209dfd704f24b8b534b2cdbf8b69
  Virtualization: kvm
Operating System: Debian GNU/Linux 12 (bookworm)
          Kernel: Linux 6.1.0-9-amd64
    Architecture: x86-64
 Hardware Vendor: Red Hat
  Hardware Model: KVM
Firmware Version: 1.16.0-4.el9

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