if type ipmitool >/dev/null
then
    IPMI_FILE=$MK_CONFDIR/ipmitool_sensors.cache
    if [ ! -d $MK_CONFDIR ]; then
        mkdir -p $MK_CONFDIR
    fi

    # Do not use cache file after 20 minutes
    IPMI_MAXAGE=1200

    # Check if file exists and is recent enough
    if [ -s $IPMI_FILE ]
    then
        NOW=$(date +%s)
        MTIME=$(stat -c %Y $IPMI_FILE)
        if [ $((NOW - MTIME)) -le $IPMI_MAXAGE ] ; then
            USE_IPMI_FILE=1
        fi
    fi

    if [ -s "$IPMI_FILE" ]
    then
        grep -v 'command failed' "$IPMI_FILE" \
        | sed -e 's/ *| */|/g' -e "s/ /_/g" -e 's/_*$//' -e 's/|/ /g' \
        | egrep -v '^[^ ]+ na ' \
        | grep -v ' discrete '
    fi

    if [ -z "$USE_IPMI_FILE" -a ! -e "$IPMI_FILE.new" ]
    then
        setsid bash -c "set -o noclobber ; ipmitool sensor list > $IPMI_FILE.new && mv $IPMI_FILE.new $IPMI_FILE || rm -f $IPMI_FILE*" &
    fi
fi