sources.list文件内容如下：
## Major bug fix updates produced after the final release of the
## distribution.
deb http://old-releases.ubuntu.com/ubuntu/ maverick main restricted
deb-src http://old-releases.ubuntu.com/ubuntu/ maverick main restricted
deb http://old-releases.ubuntu.com/ubuntu/ maverick-updates main restricted
deb-src http://old-releases.ubuntu.com/ubuntu/ maverick-updates main restricted
## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
## team. Also, please note that software in universe WILL NOT receive any
## review or updates from the Ubuntu security team.
deb http://old-releases.ubuntu.com/ubuntu/ maverick universe
deb-src http://old-releases.ubuntu.com/ubuntu/ maverick universe
deb http://old-releases.ubuntu.com/ubuntu/ maverick-updates universe
deb-src http://old-releases.ubuntu.com/ubuntu/ maverick-updates universe
## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
## team, and may not be under a free licence. Please satisfy yourself as to
## your rights to use the software. Also, please note that software in
## multiverse WILL NOT receive any review or updates from the Ubuntu
## security team.
deb http://old-releases.ubuntu.com/ubuntu/ maverick multiverse
deb-src http://old-releases.ubuntu.com/ubuntu/ maverick multiverse
deb http://old-releases.ubuntu.com/ubuntu/ maverick-updates multiverse
deb-src http://old-releases.ubuntu.com/ubuntu/ maverick-updates multiverse
## Uncomment the following two lines to add software from the 'backports'
## repository.
## N.B. software from this repository may not have been tested as
## extensively as that contained in the main release, although it includes
## newer versions of some applications which may provide useful features.
## Also, please note that software in backports WILL NOT receive any review
## or updates from the Ubuntu security team.
# deb http://us.old-releases.ubuntu.com/ubuntu/ maverick-backports main restricted universe multiverse
# deb-src http://us.old-releases.ubuntu.com/ubuntu/ maverick-backports main restricted universe multiverse
#remastersys for backup installed system
deb http://www.remastersys.com/ubuntu maverick main
# deb cdrom:[Ubuntu 13.04 _Raring Ringtail_ - Release i386 (20130424)]/ raring main restricted
# See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to
# newer versions of the distribution.
deb http://us.archive.ubuntu.com/ubuntu/ raring main restricted
deb-src http://us.archive.ubuntu.com/ubuntu/ raring main restricted
## Major bug fix updates produced after the final release of the
## distribution.
deb http://us.archive.ubuntu.com/ubuntu/ raring-updates main restricted
deb-src http://us.archive.ubuntu.com/ubuntu/ raring-updates main restricted
## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
## team. Also, please note that software in universe WILL NOT receive any
## review or updates from the Ubuntu security team.
deb http://us.archive.ubuntu.com/ubuntu/ raring universe
deb-src http://us.archive.ubuntu.com/ubuntu/ raring universe
deb http://us.archive.ubuntu.com/ubuntu/ raring-updates universe
deb-src http://us.archive.ubuntu.com/ubuntu/ raring-updates universe
## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
## team, and may not be under a free licence. Please satisfy yourself as to
## your rights to use the software. Also, please note that software in
## multiverse WILL NOT receive any review or updates from the Ubuntu
## security team.
deb http://us.archive.ubuntu.com/ubuntu/ raring multiverse
deb-src http://us.archive.ubuntu.com/ubuntu/ raring multiverse
deb http://us.archive.ubuntu.com/ubuntu/ raring-updates multiverse
deb-src http://us.archive.ubuntu.com/ubuntu/ raring-updates multiverse
## N.B. software from this repository may not have been tested as
## extensively as that contained in the main release, although it includes
## newer versions of some applications which may provide useful features.
## Also, please note that software in backports WILL NOT receive any review
## or updates from the Ubuntu security team.
deb http://us.archive.ubuntu.com/ubuntu/ raring-backports main restricted universe multiverse
deb-src http://us.archive.ubuntu.com/ubuntu/ raring-backports main restricted universe multiverse
deb http://security.ubuntu.com/ubuntu raring-security main restricted
deb-src http://security.ubuntu.com/ubuntu raring-security main restricted
deb http://security.ubuntu.com/ubuntu raring-security universe
deb-src http://security.ubuntu.com/ubuntu raring-security universe
deb http://security.ubuntu.com/ubuntu raring-security multiverse
deb-src http://security.ubuntu.com/ubuntu raring-security multiverse
## Uncomment the following two lines to add software from Canonical's
## 'partner' repository.
## This software is not part of Ubuntu, but is offered by Canonical and the
## respective vendors as a service to Ubuntu users.
# deb http://archive.canonical.com/ubuntu raring partner
# deb-src http://archive.canonical.com/ubuntu raring partner
## This software is not part of Ubuntu, but is offered by third-party
## developers who want to ship their latest software.
deb http://extras.ubuntu.com/ubuntu raring main
deb-src http://extras.ubuntu.com/ubuntu raring main
deb http://mirrors.ustc.edu.cn/ubuntu/ saucy main restricted universe multiverse
deb http://mirrors.ustc.edu.cn/ubuntu/ saucy-security main restricted universe multiverse
deb http://mirrors.ustc.edu.cn/ubuntu/ saucy-updates main restricted universe multiverse
deb http://mirrors.ustc.edu.cn/ubuntu/ saucy-proposed main restricted universe multiverse
deb http://mirrors.ustc.edu.cn/ubuntu/ saucy-backports main restricted universe multiverse
备份原来的sources.list：
cp /etc/apt/sources.list /etc/apt/sources.list.banckup
替换sources.list：
cp /home/hui/Download/sources.list /etc/apt/sources.list
重点内容更新包：
sudo apt-get update
报错，版本不一致：
Reading package lists... Done
Building dependency tree
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:
The following packages have unmet dependencies:
openssh-server: Depends: openssh-client (= 1:5.3p1-3ubuntu3) but 1:5.3p1-3ubuntu4 is to be installed
E: Broken packages
重点内容输入如下命令即可：
sudo apt-get install openssh-client=1:5.3p1-3ubuntu3
然后出现下面的执行过程：
Reading package lists... Done
Building dependency tree
Reading state information... Done
Suggested packages:
libpam-ssh keychain openssh-blacklist openssh-blacklist-extra
The following packages will be DOWNGRADED:
openssh-client
0 upgraded, 0 newly installed, 1 downgraded, 0 to remove and 299 not upgraded.
Need to get 761kB of archives.
After this operation, 0B of additional disk space will be used.
Do you want to continue [Y/n]? y
Get:1 http://us.archive.ubuntu.com/ubuntu/ lucid/main openssh-client 1:5.3p1-3ubuntu3 [761kB]
Fetched 761kB in 1min 48s (7,003B/s)
dpkg: warning: downgrading openssh-client from 1:5.3p1-3ubuntu4 to 1:5.3p1-3ubuntu3.
(Reading database ... 124425 files and directories currently installed.)
Preparing to replace openssh-client 1:5.3p1-3ubuntu4 (using .../openssh-client_1%3a5.3p1-3ubuntu3_i386.deb) ...
Unpacking replacement openssh-client ...
Processing triggers for man-db ...
Setting up openssh-client (1:5.3p1-3ubuntu3) ...
安装 openssh-server：
sudo apt-get install openssh-server
提示，标示安装成功：
Reading package lists... Done
Building dependency tree
Reading state information... Done
Suggested packages:
rssh molly-guard openssh-blacklist openssh-blacklist-extra
The following NEW packages will be installed:
openssh-server
0 upgraded, 1 newly installed, 0 to remove and 299 not upgraded.
Need to get 285kB of archives.
After this operation, 778kB of additional disk space will be used.
Get:1 http://us.archive.ubuntu.com/ubuntu/ lucid/main openssh-server 1:5.3p1-3ubuntu3 [285kB]
Fetched 285kB in 1min 13s (3,866B/s)
Preconfiguring packages ...
Selecting previously deselected package openssh-server.
(Reading database ... 124425 files and directories currently installed.)
Unpacking openssh-server (from .../openssh-server_1%3a5.3p1-3ubuntu3_i386.deb) ...
Processing triggers for ureadahead ...
ureadahead will be reprofiled on next reboot
Processing triggers for ufw ...
Processing triggers for man-db ...
Setting up openssh-server (1:5.3p1-3ubuntu3) ...
Creating SSH2 RSA key; this may take some time ...
Creating SSH2 DSA key; this may take some time ...
* Stopping OpenBSD Secure Shell server sshd [ OK ]
ssh start/running, process 10119
查看启动：
ps -e |grep ssh
如下：表示启动成功：
root@ubuntu:/etc/apt# ps -e|grep ssh
8396 ? 00:00:00 ssh-agent
11177 ? 00:00:00 sshd