BASH script to find unmounted drives/partitions in linux

 for i in `fdisk -l | grep -E -v "/dev/sd.:|Device" | grep -E --color "/dev/sd|Size" | /local/etc/colcut 1`   do

        j=`/usr/bin/echo $i | cut -c 1-8`

        /usr/bin/df -h | /usr/bin/grep -E --color "/dev/sd|Device" | /usr/bin/sort | /usr/bin/grep -q $j || /usr/bin/echo $i

    done