再发天气预报脚本

网页在这里：

以下是脚本：

#!/bin/bash -

WEATHER_FILE=/tmp/101010200.shtml
if [ ! -f $WEATHER_FILE ]
then
    echo "尚无信息"
    exit 1
fi

case $1 in
    [0-9] )
        day=`expr $1 - 1`
        day=`date --date="$day day"|awk '{print $3$4}'`
        weather=`w3m $WEATHER_FILE -dump|grep $day|grep '\℃'|awk '{print $2" "$4" "$5" "$6}'|sed -n 's/\℃/度/g;p'`
        if [ "$weather" = " " ] || [ "$weather" = "" ]
        then
            echo "尚无信息"
        else
            echo $weather
        fi
        ;;
    * )
        echo "尚无信息"
        ;;
esac