当我尝试安装 vpn 时出现以下信息：
root@root:~# apt-get install network-manager-openvpn-gnome
Reading package lists... Done
Building dependency tree
Reading state information... Done
Package network-manager-openvpn-gnome 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 'network-manager-openvpn-gnome' has no installation candidate
root@root:~#
答案1
包裹network-manager-openvpn-gnome在宇宙Ubuntu 的存储库。
首先启用此存储库。
然后安装使用
sudo apt-get install network-manager-openvpn-gnome
额外建议，不要成为 root。sudo尽可能使用。