ubuntu openssh-server老版本安装

ubuntu随着更新源的不断迭代可能导致安装软件的无法正常从更新源下载

安装openssh-server的个人实例

1、查看Ubuntu版本

cat /etc/issue

2、更新源方法

首先，备份软件源文件

sudo cp /etc/apt/sources.list /etc/apt/sources.list.backup

然后，编辑软件源文件

sudo vi /etc/apt/sources.list

之后，删除所有内容，并添加下面对应版本的软件源地址，保存并退出

sudo vi /etc/apt/sources.list

最后，更新源索引，就可以使用了

sudo apt-get update

3、更新源地址

Ubuntu 14.04 (代号Trusty Tahr)

deb http://mirrors.oschina.net/ubuntu/ trusty main restricted universe multiverse

deb http://mirrors.oschina.net/ubuntu/ trusty-backports main restricted universe multiverse

deb http://mirrors.oschina.net/ubuntu/ trusty-proposed main restricted universe multiverse

deb http://mirrors.oschina.net/ubuntu/ trusty-security main restricted universe multiverse

deb http://mirrors.oschina.net/ubuntu/ trusty-updates main restricted universe multiverse

deb-src http://mirrors.oschina.net/ubuntu/ trusty main restricted universe multiverse

deb-src http://mirrors.oschina.net/ubuntu/ trusty-backports main restricted universe multiverse

deb-src http://mirrors.oschina.net/ubuntu/ trusty-proposed main restricted universe multiverse

deb-src http://mirrors.oschina.net/ubuntu/ trusty-security main restricted universe multiverse

deb-src http://mirrors.oschina.net/ubuntu/ trusty-updates main restricted universe multiverse

Ubuntu 13.10 (代号Saucy Salamander)

deb http://mirrors.oschina.net/ubuntu/ saucy main restricted universe multiverse

deb http://mirrors.oschina.net/ubuntu/ saucy-backports main restricted universe multiverse

deb http://mirrors.oschina.net/ubuntu/ saucy-proposed main restricted universe multiverse

deb http://mirrors.oschina.net/ubuntu/ saucy-security main restricted universe multiverse

deb http://mirrors.oschina.net/ubuntu/ saucy-updates main restricted universe multiverse

deb-src http://mirrors.oschina.net/ubuntu/ saucy main restricted universe multiverse

deb-src http://mirrors.oschina.net/ubuntu/ saucy-backports main restricted universe multiverse

deb-src http://mirrors.oschina.net/ubuntu/ saucy-proposed main restricted universe multiverse

deb-src http://mirrors.oschina.net/ubuntu/ saucy-security main restricted universe multiverse

deb-src http://mirrors.oschina.net/ubuntu/ saucy-updates main restricted universe multiverse

Ubuntu 13.04 (代号Raring Ringtail)

deb http://mirrors.oschina.net/ubuntu/ raring main restricted universe multiverse

deb http://mirrors.oschina.net/ubuntu/ raring-backports main restricted universe multiverse

deb http://mirrors.oschina.net/ubuntu/ raring-proposed main restricted universe multiverse

deb http://mirrors.oschina.net/ubuntu/ raring-security main restricted universe multiverse

deb http://mirrors.oschina.net/ubuntu/ raring-updates main restricted universe multiverse

deb-src http://mirrors.oschina.net/ubuntu/ raring main restricted universe multiverse

deb-src http://mirrors.oschina.net/ubuntu/ raring-backports main restricted universe multiverse

deb-src http://mirrors.oschina.net/ubuntu/ raring-proposed main restricted universe multiverse

deb-src http://mirrors.oschina.net/ubuntu/ raring-security main restricted universe multiverse

deb-src http://mirrors.oschina.net/ubuntu/ raring-updates main restricted universe multiverse

Ubuntu 12.10 (代号Quantal Quetzal)

deb http://mirrors.oschina.net/ubuntu/ quantal main restricted universe multiverse

deb http://mirrors.oschina.net/ubuntu/ quantal-backports main restricted universe multiverse

deb http://mirrors.oschina.net/ubuntu/ quantal-proposed main restricted universe multiverse

deb http://mirrors.oschina.net/ubuntu/ quantal-security main restricted universe multiverse

deb http://mirrors.oschina.net/ubuntu/ quantal-updates main restricted universe multiverse

deb-src http://mirrors.oschina.net/ubuntu/ quantal main restricted universe multiverse

deb-src http://mirrors.oschina.net/ubuntu/ quantal-backports main restricted universe multiverse

deb-src http://mirrors.oschina.net/ubuntu/ quantal-proposed main restricted universe multiverse

deb-src http://mirrors.oschina.net/ubuntu/ quantal-security main restricted universe multiverse

deb-src http://mirrors.oschina.net/ubuntu/ quantal-updates main restricted universe multiverse

Ubuntu 12.04 (代号Precise Pangolin)

deb http://mirrors.oschina.net/ubuntu/ precise main restricted universe multiverse

deb http://mirrors.oschina.net/ubuntu/ precise-backports main restricted universe multiverse

deb http://mirrors.oschina.net/ubuntu/ precise-proposed main restricted universe multiverse

deb http://mirrors.oschina.net/ubuntu/ precise-security main restricted universe multiverse

deb http://mirrors.oschina.net/ubuntu/ precise-updates main restricted universe multiverse

deb-src http://mirrors.oschina.net/ubuntu/ precise main restricted universe multiverse

deb-src http://mirrors.oschina.net/ubuntu/ precise-backports main restricted universe multiverse

deb-src http://mirrors.oschina.net/ubuntu/ precise-proposed main restricted universe multiverse

deb-src http://mirrors.oschina.net/ubuntu/ precise-security main restricted universe multiverse

deb-src http://mirrors.oschina.net/ubuntu/ precise-updates main restricted universe multiverse

Ubuntu 10.04 (代号Lucid Lynx)

deb http://mirrors.oschina.net/ubuntu/ lucid main restricted universe multiverse

deb http://mirrors.oschina.net/ubuntu/ lucid-backports main restricted universe multiverse

deb http://mirrors.oschina.net/ubuntu/ lucid-proposed main restricted universe multiverse

deb http://mirrors.oschina.net/ubuntu/ lucid-security main restricted universe multiverse

deb http://mirrors.oschina.net/ubuntu/ lucid-updates main restricted universe multiverse

deb-src http://mirrors.oschina.net/ubuntu/ lucid main restricted universe multiverse

deb-src http://mirrors.oschina.net/ubuntu/ lucid-backports main restricted universe multiverse

deb-src http://mirrors.oschina.net/ubuntu/ lucid-proposed main restricted universe multiverse

deb-src http://mirrors.oschina.net/ubuntu/ lucid-security main restricted universe multiverse

deb-src http://mirrors.oschina.net/ubuntu/ lucid-updates main restricted universe multiverse

sudo apt-get install openssh-server

Ubuntu缺省情况下，并没有提供C/C++的编译环境，因此还需要手动安装。

　　如果单独安装gcc以及g++比较麻烦，幸运的是，为了能够编译Ubuntu的内核，Ubuntu提供了一个build-essential软件包。

　　查看该软件包的依赖关系，可以看到以下内容：

　　$ apt-cache depends build-essential

　　build-essential

　　依赖: libc6-dev

　　依赖:

　　libc6-dev

　　依赖: gcc

　　依赖: g++

　　依赖: make

　　依赖: dpkg-dev

　　也就是说，安装了该软件包，编译c/c++所需要的软件包也都会被安装。因此如果想在Ubuntu中编译c/c++程序，只需要安装该软件包就可以了。

　　安装方法如下：

　　$sudo apt-get install build-essential