This bourne shell script calls the sg_turs utility on each given
DEVICE. This will send a SCSI TEST UNIT READY command to each
DEVICE. Disks, tape drives and DVD/BD players amongst others
may respond to this SCSI command.
OPTIONS
Arguments to long options are mandatory for short options as well.
-b, --brief
for each DEVICE given output a line containing either ' ready'
or ' device not ready'. If DEVICE is not found or there is
another serious error then an error message will appear instead.
-h, --help
print out the usage message then exit.
-v, --verbose
increase level or verbosity.
EXIT STATUS
The exit status of this script is 0 when it is successful. Otherwise the
exit status is that of the last sg_turs utility called. See
the sg3_utils(8) man page.