更新软件源

以下命令均需要使用 putty 登录到服务器远程执行命令操作，你可以直接复制下面的命令，然后点击 putty 窗口按鼠标右键，粘贴命令。 本步骤不可跳过，需要先执行，后面才可以继续，建议每次安装新软件时，都执行一遍本步骤。 输入如下命令更新软件源：

apt-get update

下面的提示不同的Linux的版本存在不同的差异，但有如下类似的提示时，表示更新成功：

root@241541:~# apt-get update Get:1 http://archive.ubuntu.com maverick Release.gpg [198B] Ign http://archive.ubuntu.com/ubuntu/ maverick/main Translation-en Ign http://archive.ubuntu.com/ubuntu/ maverick/restricted Translation-en Ign http://archive.ubuntu.com/ubuntu/ maverick/universe Translation-en Get:2 http://archive.ubuntu.com maverick-updates Release.gpg [198B] Ign http://archive.ubuntu.com/ubuntu/ maverick-updates/main Translation-en Ign http://archive.ubuntu.com/ubuntu/ maverick-updates/restricted Translation-en Ign http://archive.ubuntu.com/ubuntu/ maverick-updates/universe Translation-en Get:3 http://archive.ubuntu.com maverick-security Release.gpg [198B] Ign http://archive.ubuntu.com/ubuntu/ maverick-security/main Translation-en Ign http://archive.ubuntu.com/ubuntu/ maverick-security/restricted Translation-en Ign http://archive.ubuntu.com/ubuntu/ maverick-security/universe Translation-en Get:4 http://archive.ubuntu.com maverick Release [39.8kB] Get:5 http://archive.ubuntu.com maverick-updates Release [31.4kB] Get:6 http://archive.ubuntu.com maverick-security Release [31.4kB] Get:7 http://archive.ubuntu.com maverick/main i386 Packages [1492kB] Get:8 http://archive.ubuntu.com maverick/restricted i386 Packages [5992B] Get:9 http://archive.ubuntu.com maverick/universe i386 Packages [5791kB] Get:10 http://archive.ubuntu.com maverick-updates/main i386 Packages [380kB] Get:11 http://archive.ubuntu.com maverick-updates/restricted i386 Packages [1797B] Get:12 http://archive.ubuntu.com maverick-updates/universe i386 Packages [157kB] Get:13 http://archive.ubuntu.com maverick-security/main i386 Packages [157kB] Get:14 http://archive.ubuntu.com maverick-security/restricted i386 Packages [14B] Get:15 http://archive.ubuntu.com maverick-security/universe i386 Packages [77.9kB] Fetched 8166kB in 4s (1724kB/s) Reading package lists... Done