On Wed, 2012-06-13 at 00:05 +0800, 张启德(Zhang Qide) wrote: > If you are using squeeze and want to upgrades to 13, just edit > /etc/apt/sources.list and add this line to it: [snip] http://lists.debian.org/debian-user/2012/06/msg00888.html http://lists.debian.org/debian-user/2012/06/msg00892.html