ubuntu 12.04 mac主题？ubuntu更新软件包
ubuntu12.04系统怎么修改状态栏
方法/步骤
一般刚安装好的Ubuntu系统任务栏是位于最上面的，小编这里的系统栏是位于下方的，是小编已经改过的，下面小编就来说说具体的修改方法
在任务栏上面点右键，记得一定是要在任务栏上面，然后在弹出的菜单中选择“属性”
在打开的“面板属性”对话框中，我们可以看到当前的状态栏的一些可定制项的状态
点击位置后面的具体位置，就弹出位置的可选设置项，当前为底部
在这里我们选择为“顶部”，然后再来看效果，选择之后，状态栏马上就“跑到”最上面去了
下面我们再来看看把状态栏的位置改变之后，具体的对系统菜单的操作有哪些改变，这里就点击“应用程序”菜单为例，菜单的显示位置和底部的时候不一样
这里的操作是在把状态栏的位置改为“右边”之后的“应用程序”的显示情况
我们再将任务栏的位置改为“左边”看效果，四种情况经过对比发现，只有状态栏位于底部和顶部的时候操作最人性化，其中状态栏位于底部的时候，操作和windows系统的类型
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 12.04背景色无法更改的解决方法
Ubuntu 12.04无法修改背景色的解决方法如下：
首先，需要安装dconf-editor：
sudo apt-get install dconf-tools
接着，打开dconf-editor，定位至：org– gnome-desktop– interface。
在gtk-color-scheme项目下，发现默认为空，需要自行添加颜色。
添加格式为：
项目名称：颜色名称；项目名称：颜色名称；
可参考此网址中有关Default colors in GNOME的描述，进行颜色设置。
设置示例：
base_color：#CCE8CF
bg_color：根据实际需要调整，一般用于文件浏览背景等非文本区域。
base_color：用于文本编辑区域背景。
注意：在设置时，请使用英文的""而不是"\n"，描述信息应为“A‘\n’ separated list of“name:color” as defined by the‘gtk-color-scheme’ setting”。
通过上述方法，可将Ubuntu 12.04的背景色设置为自定义颜色。请确保区分设置base_color和bg_color的适用区域。
