Note that some systems do not allow setting of service tag outside of the Dell factory.
$ ./serviceTag Existing Service Tag:
$ ./serviceTagS -s foobar1 Existing Service Tag: Changing Service Tag: foobar1 Change Successful. The changes may not take effect until reboot, depending on system type.
Generated on Wed Apr 11 16:25:11 2007 for SMBIOS Library by 1.3.5