Ubuntu设置动态壁纸（background）

Ubuntu默认的壁纸存放在/usr/share /backgrounds/目录下,该目录下有个cosmos子目录,

cosmos里面的background-1.xml文件就是实现

动态桌面(background)壁纸切换功能

其实很简单

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<background>

<starttime>

<year>2009</year>

<month>08</month>

<day>04</day>

<hour>00</hour>

<minute>00</minute>

<second>00</second>

</starttime>

<!-- This animation will start at midnight. -->

<!--

duration 标签设置持续的时间，以秒为单位

transition

标签设置图片切换

from.. to..
-->

<static>

<duration>1795.0</duration>

<file>/usr/share/backgrounds/cosmos/cloud.jpg</file>

</static>

<transition>

<duration>5.0</duration>

<from>/usr/share/backgrounds/cosmos/cloud.jpg</from>

<to>/usr/share/backgrounds/cosmos/comet.jpg</to>

</transition>

<static>

<duration>1795.0</duration>

<file>/usr/share/backgrounds/cosmos/comet.jpg</file>

</static>

<transition>

<duration>5.0</duration>

<from>/usr/share/backgrounds/cosmos/comet.jpg</from>

<to>/usr/share/backgrounds/cosmos/earth-horizon.jpg</to>

</transition>

<static>

<duration>1795.0</duration>

<file>/usr/share/backgrounds/cosmos/earth-horizon.jpg</file>

</static>

<transition>

<duration>5.0</duration>

<from>/usr/share/backgrounds/cosmos/earth-horizon.jpg</from>

<to>/usr/share/backgrounds/cosmos/blue-marble-west.jpg</to>

</transition>

<static>

<duration>1795.0</duration>

<file>/usr/share/backgrounds/cosmos/blue-marble-west.jpg</file>

</static>

<transition>

<duration>5.0</duration>

<from>/usr/share/backgrounds/cosmos/blue-marble-west.jpg</from>

<to>/usr/share/backgrounds/cosmos/galaxy-ngc3370.jpg</to>

</transition>

<static>

<duration>1795.0</duration>

<file>/usr/share/backgrounds/cosmos/galaxy-ngc3370.jpg</file>

</static>

<transition>

<duration>5.0</duration>

<from>/usr/share/backgrounds/cosmos/galaxy-ngc3370.jpg</from>

<to>/usr/share/backgrounds/cosmos/helix-nebula.jpg</to>

</transition>

<static>

<duration>1795.0</duration>

<file>/usr/share/backgrounds/cosmos/helix-nebula.jpg</file>

</static>

<transition>

<duration>5.0</duration>

<from>/usr/share/backgrounds/cosmos/helix-nebula.jpg</from>

<to>/usr/share/backgrounds/cosmos/jupiter.jpg</to>

</transition>

<static>

<duration>1795.0</duration>

<file>/usr/share/backgrounds/cosmos/jupiter.jpg</file>

</static>

<transition>

<duration>5.0</duration>

<from>/usr/share/backgrounds/cosmos/jupiter.jpg</from>

<to>/usr/share/backgrounds/cosmos/sombrero.jpg</to>

</transition>

<static>

<duration>1795.0</duration>

<file>/usr/share/backgrounds/cosmos/sombrero.jpg</file>

</static>

<transition>

<duration>5.0</duration>

<from>/usr/share/backgrounds/cosmos/sombrero.jpg</from>

<to>/usr/share/backgrounds/cosmos/whirlpool.jpg</to>

</transition>

<static>

<duration>1795.0</duration>

<file>/usr/share/backgrounds/cosmos/whirlpool.jpg</file>

</static>

<transition>

<duration>5.0</duration>

<from>/usr/share/backgrounds/cosmos/whirlpool.jpg</from>

<to>/usr/share/backgrounds/cosmos/cloud.jpg</to>

</transition>

</background>

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转载：http://hi.baidu.com/mcmlxxxviii/blog/item/ebad683a7902b93070cf6cb2.html