shell脚本执行 九九乘法表

方法一

!/bin/bash

for i in seq 9
do
for j in seq 9
do
[ $i -ge $j ]
if [ $? -eq 0 ];then
echo -n " $i$j=$[ij]"
fi
done
echo
done
方法二

!/bin/bash

for i in seq 9
do
for j in seq $i #//j小于等于i
do
echo -n " $i$j=$[ij]"
done
echo
done