我正在尝试安装 DS9，但尝试了几种方法后，命令行仍然向我发送相同的答案。
首先，我运行sudo apt-get update，然后sudo apt-get upgrade。输入完后sudo apt-get install saods9，终端返回的是
Reading package lists... Done
Building dependency tree
Reading state information... Done
Package saods9 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 'saods9' has no installation candidate
有人知道我应该怎样安装它吗？谢谢。
答案1
saods9仅支持 Ubuntu 14.04 及更高版本。您可以使用来自的 PPA 在 12.04 上安装它这里。