如题所述
第1个回答 2016-10-19
x=5
[ $(((100 - 5*x) %3)) -eq 0 ] && echo ok
请采纳。
[ $(((100 - 5*x) %3)) -eq 0 ] && echo ok
请采纳。
第2个回答 2016-11-10
read -p "please enter a number: " a
echo $a |grep "^[[:digit:]]\+$" >>/dev/null
k=$?
if [ $k -eq 0 ];then
echo "$a is a int"
else
echo "$a is not a int"
fi
echo $a |grep "^[[:digit:]]\+$" >>/dev/null
k=$?
if [ $k -eq 0 ];then
echo "$a is a int"
else
echo "$a is not a int"
fi
