shell脚本

fun()
{
    #创建目录Test1和Test2
    mkdir /work/Study/Test1    
    mkdir /work/Study/Test2
    #通过mount命令将Test1绑定挂载在test2上
    mount --bind /work/Study/Test1 /work/Study/Test2
    #通过touch命令生成1.txt和2.txt文件
    touch /work/Study/Test1/1.txt
    touch /work/Study/Test1/2.txt
    #实现输入两个数，将之间的值输入到1.txt，将1.txt的内容复制到2.txt，再追加逆序到2.txt上面
    read min; read max;
    while [ $min -ge $max ]
        do
           echo "shuru max"
           read max
        done
     for (( i= $min; i <= $max; i++ ))
        do
           echo -n "$i "
        done > /work/Study/Test1/1.txt
    cat /work/Study/Test1/1.txt > /work/Study/Test1/2.txt
         echo "" >> /work/Study/Test1/2.txt
         
    for (( i=$max; i >= $min; i--))
        do
           echo -n "$i "
        done >> /work/Study/Test1/2.txt
     #打印2.txt的内容
     cat /work/Study/Test1/2.txt
     #输出test2的所有文件
     ls -a  /work/Study/Test2
     #取消目录绑定，并删除Test1和Test2
     rm -rf /work/Study/Test1
     umount -l /work/Study/Test2
     rm -rf /work/Study/Test2
     
 }