shell整除取余

date取得分钟数
$(()) 运算

#execute every 5 minutes
a=`date +%M`
b=$(( $a % 5 ))
if [ $b = 0 ]

then
       echo "execute it"
else
       echo "Not execute"
fi

转载于:https://blog.51cto.com/liucb/1842342