The propertyTag executable relies on the "dcdbas" kernel-mode driver. This driver is included in Linux kernels starting at 2.6.14. A dkms package is provided in the libsmbios package for earlier 2.6.x kernels.
$ ./propertyTag Existing Property Tag:
$ ./propertyTagS -s "New property ownership tag." Existing Property Ownership Tag: Changing Property Ownership Tag: New property ownership tag. Change Successful. The changes may not take effect until reboot, depending on system type.