shell学习第三篇（for循环和while循环）

1 --for循环，语法：如果do放在for循环语句在同一行，使用；分隔开

for xx in xx

  do

     执行的命令

done

# /bin/sh

for each in liming nana zhangsan
    
    do
        echo "this is $each"
done

2 --while循环，语法和for一样

#! /bin/sh

echo "please enter your name"
read NAME
while [ "$NAME" != "mayun" ]; do
    echo "your name is wrong, please try again"
    read NAME
done