shell脚本打印九九乘法表

• shell脚本打印九九乘法表

#!/bin/bash

for i in {1..9}
do
       for j in {1..9}
       do
          if [ $j -le $i ]
          then
                echo -n "${j}X${i}=$(($i*$j))  "
          fi
       done

       echo
done