$ sudo add-apt-repository ppa:qucs
[sudo] password for hsthakar:
Cannot add PPA: 'ppa:~qucs/ubuntu/ppa'.
ERROR: '~qucs' user or team does not exist.
$ sudo apt-get install qucs
Reading package lists... Done
Building dependency tree
Reading state information... Done
Package qucs 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 'qucs' has no installation candidate
答案1
奎克斯不支持 Ubuntu 15.10。
最重要的是，如果您想在早期版本上安装它，您应该替换：
sudo add-apt-repository ppa:qucs
和：
sudo apt-add-repository ppa:qucs/qucs