for嵌套

#!/bin/bash
# 
#Author: www.zutuanxue.com
#Created Time: 
#Release: 
#Description:输出1-9，当输出5时停止输出

for ((num=1;num<10;num++))
   do
     echo $num
     [ $num -eq 5 ]&& break
done

#!/bin/bash
# 
#Author: www.zutuanxue.com
#Created Time: 
#Release: 
#Description: 
#打印99乘法表，思考A*B的关系
for ((A=1;A<=9;A++))
  do
     for ((B=1;B<=$A;B++))
        do
           echo -n -e "$B*$A=$((A*B)) \t"
     done
     #换行
     echo 
done

name=('tom' 'jarry' 'harry' 'barry')
for i in 0 1 2 3
  do
      echo ${name[$i]}
 done

for i in `seq 0 9`
  do
     read -p "name: " name[$i]
 done