Sometimes you stumble across things you really like and need to jot down to have them for usage later. Or find your own question on Stack Overflow, a random forum or a mailing list.
On $daytimejob we often need to answer the question if a particular system that we have access to is a virtual machine or not.
Instead of doing some scrolling action through lshw, dmesg or others there is systemd in place.
At least in most cases.
systemd-detect-virt
And you will get your answer: qemu, amazon, vmware or none with an exit code of 1.
For additional information, see https://www.freedesktop.org/software/systemd/man/latest/systemd-detect-virt.html
