今天在安装软件的时候出现了Package has no installation candidate的问题，如：
# apt-get install <packagename>
Reading package lists... Done
Building dependency tree... Done
Package aptitude is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source
E: Package <packagename> has no installation candidate
解决方法如下：
# apt-get update
【更新同步安装列表。在这一步之前可能还需要添加新的源，比如
vim /etc/apt/sources.list 我添加了2个
deb http://mirrors.163.com/ubuntu/ hardy main universe
deb http://tw.archive.ubuntu.com/ubuntu/ hardy main universe
】
# apt-get upgrade【升级所有可升级的已安装包？我没做这一步，也可以】
# apt-get install <packagename>
这样就可以正常使用apt-get了～
本文转自：http://hi.baidu.com/lozard/item/03b854f5a8630015e2e3bd0a
posted on 2013-04-02 13:41
王海光 阅读(9690)
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