工作环境：Red Hat Enterprise Linux Server release 6.5 (Santiago) 、 bash

#!/bin/bash
#
for i in `seq 9`
do
for j in `seq 9`
do
if [ $j -le $i ];then
echo -n " $j * $i = $(($i*$j)) "
else
# echo -e "\n"
echo
break;
fi
done
done


注意： echo -e "\n"
echo

的区别