The SCSI utility is used for normal maintenance of SCSI peripherals. This utility can also be used to do device specific setup, diagnostics, and querying of various device information.

Scu was originally developed for Tru64 Unix and then ported to various operating systems, specifically for test purposes. While the source code was never permitted for public release, the executables were. But that said, no major development has been done for years, but this tool is still useful for its' excellent support of inquiry pages, log pages, mode pages, and diagnostic capabilities (IMHO).