Install archdetect-deb by entering the following commands in the terminal:
sudo apt update sudo apt install archdetect-deb
Hardware architecture detector
This package provides the 'archdetect' tool, which displays the current machine architecture and subarchitecture. The architecture corresponds to that built into dpkg, and describes the CPU (and possibly kernel) types; the subarchitecture distinguishes machines with different boot arrangements that require special handling. . This package would be called 'archdetect', but a udeb of that name already existed for use in the installer.