find_error.sh 編寫如下：

todayday=$(date +%Y-%m-%d)

thismoment=$(date +"%Y-%m-%d %H")

echo $thismoment

prg=/home/hoho/logs

cd $prg

iserror=`grep '$thismoment'  catalina-${todayday}.out -C20|grep 'java.sql.SQLException: PooledConnection has already been closed'`

if [ ! -n "$iserror" ]; then

  echo "${thismoment} 不用報警" >> $prg/abc.txt

else

  echo "${thismoment} 報警" >> $prg/abc.txt

  echo "${thismoment}：java.sql.SQLException: PooledConnection has already been closed" |mail -s "生產報錯" [mail_address]

fi

定時任務設定.每30分鐘執行一次查詢。crontab -l

*/30 * * * *  /home/hoho/logs/find_error.sh