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Filename : scsi_ready
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#!/bin/bash

################################################
#
#  Send a TEST UNIT READY SCSI command to each given device.
#
#  This script assumes the sg3_utils package is installed and uses
#  the sg_turs utility..
#
###############################################

verbose=""
brief=""

usage()
{
  echo "Usage: scsi_ready [-b] [-h] [-v] <device>+"
  echo "  where:"
  echo "    -b, --brief          print 'ready' or 'device not ready' only"
  echo "    -h, --help           print usage message"
  echo "    -v, --verbose        more verbose output"
  echo ""
  echo "Send SCSI TEST UNIT READY to each <device>"
}

opt="$1"
while test ! -z "$opt" -a -z "${opt##-*}"; do
  opt=${opt#-}
  case "$opt" in
    b|-brief) brief="1" ;;
    h|-help) usage ; exit 0 ;;
    v|-verbose) verbose="-v" ;;
    vv) verbose="-vv" ;;
    vvv) verbose="-vvv" ;;
    *) echo "Unknown option: -$opt " ; exit 1 ;;
  esac
  shift
  opt="$1"
done

if [ $# -lt 1 ]
  then
    usage
    exit 1
fi

for i
do
	if [ ! $brief ] ; then
		echo "sg_turs $verbose $i"
	fi
	echo -n "    "
        if sg_turs $verbose $i ; then
		echo "ready"
	fi
done