auto uncompression file

e.sh

#!/bin/bash

Usage(){
    echo "usage: e.sh [--list] or [Source compressed file]"
    echo "    [Destination path]"
    echo "Self uncompression accroding to the file name suffix"
    echo "     "
    echo "eg. e.sh docker-18.06.tgz /path/to/data"
    exit
}

#提示支持的解压类型
List(){ 
    echo "Supported file types: zip tar tar.gz tgz tar.bz2"
    exit
}

filename=$1
#解压到路径名
path=$2
 #获取文件名的后缀
ext="${filename##*.}"

#判断用户是否输入了第一参数
if [ -z $filename ]; then 
    Usage;
elif [ $filename = '--list' ]; then
    List;
elif [[ -n $filename && -n $path ]]; then
    case $ext in
        'tar')
            eval "tar xvf $filename -C $path";;
        'gz')
            eval "tar zxvf $filename -C $path";;
        'tgz')
            eval "tar zxvf $filename -C $path";;
        'bz2')
            eval "tar jxvf $filename -C $path";;
        'zip')
            eval "unzip $filename -d $path";;
        *)
            echo 'error(101) This type is not supported(tar|gz|bz2|zip)';;
    esac
    echo "done"
fi