用unzip无法解压文件，会报以下错误信息
End-of-central-directory signature not found. Either this file is not
a zipfile, or it constitutes one disk of a multi-part archive. In the
latter case the central directory and zipfile comment will be found on
the last disk(s) of this archive.
这是由于该压缩文件由pkzip算法压缩而成，所以必须先安装p7zip包，用p7zip来解压，这里我是直接用brew来安装p7zip的
$ brew install p7zip
安装成功后运行以下命令就可以解压你想要解压的文件了
$ 7za x xxxxx.zip
