骨头源是bones7456架设的一个Ubuntu源，这个源的特点就是能保证全和新，2小时更新一次，Ubuntu Linux 9.10 增加骨头源：
1、先备份默认更新源 sudo cp /etc/apt/sources.list /etc/apt/sources.list.backup
2、修改更新源文件 sudo gedit /etc/apt/sources.list
3、删除文件全部内容，更换成下列内容。
deb karmic main restricted universe multiverse
deb karmic-security main restricted universe multiverse
deb karmic-updates main restricted universe multiverse
deb karmic-proposed main restricted universe multiverse
deb karmic-backports main restricted universe multiverse
deb-src karmic main restricted universe multiverse
deb-src karmic-security main restricted universe multiverse
deb-src karmic-updates main restricted universe multiverse
deb-src karmic-proposed main restricted universe multiverse
deb-src karmic-backports main restricted universe multiverse
deb karmic-security main restricted
deb-src karmic-security main restricted
deb karmic-security universe
deb-src karmic-security universe
deb karmic-security multiverse
deb-src karmic-security multiverse
我用着速度还很快
图1：下载速度快着呢。
