END使用

[root@bogon ~]# cat d.sh
#!/bin/bash
#. /etc/init.d/functions
cat <<END
+----------------------------------+
| |
| This is install python |
| |
| 1.安装依赖环境 |
| 2.安装pip |
| 3.安装python3.5 |
| |
+----------------------------------+
END

#node 0.
read -p "请你输入一个数字:" NUM
# expr $NUM + 1 &> /dev/null
if [ "$?" -ne 0 ];then
echo "对不起，请你输入整数！！！" /bin/false
exit 1
elif [ "$NUM" -eq 0 ];then
echo "对不起，请你输入比0大的数字！！！" /bin/false
exit 1
fi
[root@bogon ~]# ./d.sh
+----------------------------------+
| |
| This is install python |
| |
| 1.安装依赖环境 |
| 2.安装pip |
| 3.安装python3.5 |
| |
+----------------------------------+