#!/usr/bin/env bash
path=/dir1/dir2/dir3/test.txt
echo ${path##*/} 获取文件名 test.txt
echo ${path##*.} 获取后缀 txt
#不带后缀的文件名
temp=${path##*/}
echo ${temp%.*} test
#获取目录
echo ${path%/*} /dir1/dir2/dir3