UNIX for Dummies Questions & Answers

address="myaddress@domain.com"
limit=90
df | grep -v "Filesystem" | while read line
do
        case "${line}" in
        "/dev/"*)       device="${line}"
                        ;;
        *)              percent=`echo "${line}"| \
                                awk '{print $4}'|sed -e "s/%//g"`
                        mountpoint=`echo "${line}"| \
                                awk '{print $5}'`
                        message="${device} ${mountpoint} ${percent}%"
                        if [ ${percent} -gt ${limit} ]
                        then
                                echo ""|mailx -s "${message}" "${address}"
                        fi
                        ;;
        esac
done