linux - 脚本bash更新网页并检查是否有其他差异

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我需要一个bash脚本来刷新网页并检查自上次更新以来是否已更改。我能怎么做？使用临时文件？有人可以发布代码吗？

最佳答案

我使用此网站在纽约时报网页上生成了有关每小时变化率的统计文件

#!/bin/bash
currentDate=$(date +%k-%d-%m)
lastDate=$(date +%k-%d-%m -d "now - 1 hour")
historyLocation="/media/raid/mcs/webs/script/history"
statisticsFile="/media/raid/mcs/webs/script/statistics"
links -dump www.nytimes.com > $historyLocation/$currentDate #dumps current version
echo $currentDate: >> $statisticsFile
wdiff $historyLocation/$currentDate $historyLocation/$lastDate -s | tail -2 | head -1 | cut -d' ' -f14 >> $statisticsFile