$ cat /sys/devices/virtual/dmi/id/board_name
Prints the type of computer you have.
I think this should be used more in distros and other applications because it is so easy to get. This can also be asked by tutorials as an easy way to get your base hardware.
Some alternatives:
sudo dmidecode -s system-product-name
and
sudo smbios-sys-info-lite | sed -n 's/^Product Name: *\(.*\)/\1/p'
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