修改ubuntu源 ubuntu怎么换源
如何修改Ubuntu的apt-get源
手动修改Ubuntu的apt-get源
1、用ssh工具连接到Ubuntu
2、命令行敲入 cd/etc/apt/
3、备份此目录下的source.list文件(要有sudo权限),此时就有了一个source.list.bak文件
4、清空source.list文件内容(注:清空后不可恢复,所以需要执行上一步提前备份一下这个文件),此时用sudo提示权限不够,直接切换到root用户下执行这条命令
5、用vim打开source.list,按i键进入编辑模式把要修改的源地址粘贴进来,然后按esc进入命令模式,键入:wq保存退出(不懂vim如何操作的可以先百度下如何使用vim)
6、最后执行 apt-get update就可以了(因为刚才切换到root用户,所以不用在命令前加sudo)
ubuntu12.04怎么改变更新源
1、首先备份 Ubuntu12.04源列表
sudo cp/etc/apt/sources.list/etc/apt/sources.list.backup（备份下当前的源列表）
2、修改更新源
sudo gedit/etc/apt/sources.list（打开 Ubuntu 12.04源列表文件）
3、把里面的列表替换成下面的列表
163源
deb precise main restricted
deb-src precise main restricted
deb precise-updates main restricted
deb-src precise-updates main restricted
deb precise universe
deb-src precise universe
deb precise-updates universe
deb-src precise-updates universe
deb precise multiverse
deb-src precise multiverse
deb precise-updates multiverse
deb-src precise-updates multiverse
deb precise-backports main restricted universe multiverse
deb-src precise-backports main restricted universe multiverse
deb precise-security main restricted
deb-src precise-security main restricted
deb precise-security universe
deb-src precise-security universe
deb precise-security multiverse
deb-src precise-security multiverse
deb precise main
deb-src precise main
sohu源
deb precise main restricted
deb-src precise main restricted
deb precise-updates main restricted
deb-src precise-updates main restricted
deb precise universe
deb-src precise universe
deb precise-updates universe
deb-src precise-updates universe
deb precise multiverse
deb-src precise multiverse
deb precise-updates multiverse
deb-src precise-updates multiverse
deb precise-backports main restricted universe multiverse
deb-src precise-backports main restricted universe multiverse
deb precise-security main restricted
deb-src precise-security main restricted
deb precise-security universe
deb-src precise-security universe
deb precise-security multiverse
deb-src precise-security multiverse
deb precise main
deb-src precise main
ubuntu.cn99.com源（推荐）:
deb precise main restricted universe multiverse
deb precise-updates main restricted universe multiverse
deb precise-security main restricted universe multiverse
deb precise-backports main restricted universe multiverse
deb precise main restricted universe multiverse
教育网源
如果你是在校大学生，可以使用校园网/教育网，就是用教育网的资源吧，尤其是支持 ipv6的，那更新速度就按兆算了。
#电子科技大学
deb precise main restricted universe multiverse
deb precise-backports main restricted universe multiverse
deb precise-proposed main restricted universe multiverse
deb precise-security main restricted universe multiverse
deb precise-updates main restricted universe multiverse
deb-src precise main restricted universe multiverse
deb-src precise-backports main restricted universe multiverse
deb-src precise-proposed main restricted universe multiverse
deb-src precise-security main restricted universe multiverse
deb-src precise-updates main restricted universe multiverse
#中国科技大学
deb precise main restricted universe multiverse
deb precise-backports restricted universe multiverse
deb precise-proposed main restricted universe multiverse
deb precise-security main restricted universe multiverse
deb precise-updates main restricted universe multiverse
deb-src precise main restricted universe multiverse
deb-src precise-backports main restricted universe multiverse
deb-src precise-proposed main restricted universe multiverse
deb-src precise-security main restricted universe multiverse
deb-src precise-updates main restricted universe multiverse
#北京理工大学
deb precise main multiverse restricted universe
deb precise-backports main multiverse restricted universe
deb precise-proposed main multiverse restricted universe
deb precise-security main multiverse restricted universe
deb precise-updates main multiverse restricted universe
deb-src precise main multiverse restricted universe
deb-src precise-backports main multiverse restricted universe
deb-src precise-proposed main multiverse restricted universe
deb-src precise-security main multiverse restricted universe
deb-src precise-updates main multiverse restricted universe
ubuntu换源命令Ubuntu一种修改软件源的方法
背景:
1、关于Linux系统除特别提醒，后面都将以Ubuntu为例进行介绍，因为Linux Mint、Deepin、优麒麟都是以Ubuntu发行版为基础的，介绍了Ubuntu，其他的基本也就不用单独提了，另外如果学习、工作中需要转到Centos、Redhat，因为有了Ubuntu的基础，上手也会很快，总结下就是：Ubuntu难易适中、入门良品
2、本篇主要说明，Ubuntu系统安装完成后怎么修改软件源
工具和材料：
1、安装Ubuntu系统的电脑（本文的具体版本是Ubuntu20.04）
2、联网正常
正文&步骤：
1、点击左下角更多图标
2、打开设置
3、左边侧边栏最下面鼠标点击关于后，打开软件更新
4、点击中国的服务器进行选择
5、选择其他站点
6、点击选择最佳的服务器
程序会自动进行选择最快的服务器
测试结束后，直接点击选择服务器
7、输入密码后点击认证
8、关闭（至此软件源修改完成）
9、点击重新载入（更新可用软件的列表信息）
静待更新完毕
10、如果发现第9步长时间卡住（更新缓存卡主），那么我们就不进行图形化更新了：如下图鼠标定位到软件和更新图标后点击退出窗口（Quit 2 Windows）,直到退出软件和更新为止，期间如果仍旧提醒执行第9步操作，直接退出。
11、鼠标右键打开终端
12、命令行输入：sudo apt update，按提示输入密码后会自动进行更新
更新完毕
