shell脚本编程实现9*9乘法表

脚本内容

代码如下:
#!/bin/bash 
 
for i in "1" "2" "3" "4" "5" "6" "7" "8" "9" 
do 
        for j in "1" "2" "3" "4" "5" "6" "7" "8" "9" 
                do 
                        if [ ${j} -lt  ${i} ] 
                        then 
                                        k=$((i * j)) 
                                        echo -n ${i}*${j}=${k}$'/t' 
                        fi 
                        if [ ${j} -eq ${i} ] 
                        then 
                                        k=$((i * j)) 
                                        echo   ${i}*${j}=${k} 
                        fi 
                done 
done 

输出结果

代码如下:
[iufo@iufo test]$ bash ./test.sh
1*1=1
2*1=2 2*2=4
3*1=3 3*2=6 3*3=9
4*1=4 4*2=8 4*3=12 4*4=16
5*1=5 5*2=10 5*3=15 5*4=20 5*5=25
6*1=6 6*2=12 6*3=18 6*4=24 6*5=30 6*6=36
7*1=7 7*2=14 7*3=21 7*4=28 7*5=35 7*6=42 7*7=49
8*1=8 8*2=16 8*3=24 8*4=32 8*5=40 8*6=48 8*7=56 8*8=64
9*1=9 9*2=18 9*3=27 9*4=36 9*5=45 9*6=54 9*7=63 9*8=72 9*9=81