#!/bin/bash
if [ "$#" -lt 1 ]; then #判断脚本参数个数，当参数个数小于1时，给出脚本执行方式
echo "Usage:./judge_file_arg.sh ARG1 [ARG2...]"
exit 2 #定义错误退出码
fi
if [ ! -e "$1" ]; then #判断给出的文件是否存在，不存在推出脚本
echo "no such file"
exit 3
fi
if [ -f "$1" ]; then #判断文件是否为普通文本
echo "This is normal file"
elif [ -d "$1" ]; then #判断是否为目录
echo "This is directory"
else
echo "This is other type file"
fi
