[root@iZ2zehz5b1m03ahtrhebcaZ bin]# ./start.sh
./start.sh: line 2: $'\r': command not found
./start.sh: line 3: $'\r': command not found
./start.sh: line 5: syntax error near unexpected token `$'do\r''
'/start.sh: line 5: `do错误很明显，无法解析这个东西，
我的办法：打开shell脚本，标点符号重新输入，（注意：尤其是复制的）
