Set Hostname2021/08/19

	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: 6d96b40f1a954b7cbd42a163bc9e82af
           Boot ID: 109e1823f1ac482ab84627bc796d3292
    Virtualization: kvm
  Operating System: Debian GNU/Linux 11 (bullseye)
            Kernel: Linux 5.10.0-8-amd64
      Architecture: x86-64

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