#51 add dmidecode as way of getting the BIOS version

On a recent Linux Mint system (20.3 'una') the BIOS version cannot be found using the proc way, as the file only contains these lines:

$ cat /proc/asound/cards 
 0 [Intel          ]: HDA-Intel - HDA Intel
                      HDA Intel at 0xfc320000 irq 34

If dmidecode is present, the BIOS version can be read via DMI directly (e.g. for a T400):

$ sudo dmidecode -s bios-version
7UET94WW (3.24 )

thanks!

You're welcome - thanks for accepting!