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The output of your command "$ hostnamectl" is:

 Static hostname: algorithm
       Icon name: computer-vm
         Chassis: vm 🖴
      Machine ID: 0da97e582a9542acabe1405f2d85c1fe
         Boot ID: 71b957b7e32c429eae8a0439c5e50cc1
  Virtualization: oracle
Operating System: Ubuntu 26.04 LTS
          Kernel: Linux 7.0.0-30-generic
    Architecture: x86-64
 Hardware Vendor: innotek GmbH
  Hardware Model: VirtualBox
Hardware Version: 1.2
Firmware Version: VirtualBox
   Firmware Date: Fri 2006-12-01
    Firmware Age: 19y 9month 3w 1d