在 KVM/QEMU 机器窗口大小默认匹配来宾操作系统分辨率。但是如果我（不小心）调整窗口大小如何恢复默认大小？
我有hdd.img文件，我将它用作虚拟机的硬盘，但它的大小太小，我该如何放大它？
有一种方法，例如：
dd if=/dev/zero ds=10GB count=8 >> hdd.img
但这需要很多时间:(
在 Debian 7 中安装python3时出现错误（我安装了所有更新）：
root@nuclight:~# aptitude install python3
The following NEW packages will be installed:
python3 python3.2{a}
0 packages upgraded, 2 newly installed, 0 to remove and 0 not upgraded.
Need to get 0 B/2,621 kB of archives. After unpacking 8,991 kB will be used.
Do you want to continue? [Y/n/?]
Selecting previously unselected package python3.2.
dpkg: warning: files list file for package 'python3.2-minimal' missing; assuming package has no files currently installed
(Reading database ... 101541 files and …