紧急求助：如何在Debian下安装更新软件包

luogf

我想升级我的libc6.1(原始版本为libc6.1_2.2.5-11.5）为libc6.1_2.3.2-7，并将libc6.1_2.3.2-7_alpha.deb放在/home/debian下
我创建一个本地deb仓库并执行如下命令：

     # apt-get install dpkg-dev
     # mkdir /usr/local/debian
     # mv /home/debain/package.deb /usr/local/debian
     # dpkg-scanpackages /usr/local/debian /dev/null |      gzip - >; /usr/local/debian/Packages.gz
     #  echo "deb file:/usr/local/debian ./" >;>; /etc/apt/sources.list

然后
    # apt-get update
    # apt-get -u install libc6.1

结果提示出错：
  
   Err file: ./ libc6.1 2.3.2-7
  File not found

Failed to fetch file:/usr/local/debian//usr/local/debian/libc6.1_2.3.2-7_alpha.deb  File not found
  
有哪位高手能够指点一下，感激不尽！