dmidecode is a command for displaying BIOS hardware information.
When working remotely with several computers, you sometimes want to verify that you are on the right iron. For that, the program dmidecode exists - just start it by typing dmidecode. You get all information about the computer that the vendor put into the BIOS. There are different paragraphs ("handles"), for example like that:
Handle 0x0100 DMI type 1, 25 bytes. System Information Manufacturer: Dell Computer Corporation Product Name: Dimension 4600i Version: Not Specified Serial Number: 664S31J UUID: 44454C4C-3600-1034-8053-B6C04F33314A Wake-up Type: APM Timer