#!/bin/bash
$okdevices = hpssacli controller slot=4 physicaldrive all show | grep -c "OK"
if [ $okdevices -lt 4 ]
then
    echo "disk missing"
fi

#!/bin/bash
okdevices="$(hpssacli controller slot=4 physicaldrive all show | grep -c OK)"
if [ $okdevices -lt 4 ]; then
    echo "missing disk"
fi

#!/bin/bash
okdevices="$(hpssacli controller slot=4 physicaldrive all show | grep -c OK)"
if [ $okdevices -lt 4 ]; then
    echo "missing disk"
fi