我正在尝试在 Ubuntu 16.04 上安装 metasploit。我尝试使用命令安装依赖项
sudo apt-get install ruby libopenssl-ruby libyaml-ruby libdl-ruby libiconv-ruby libreadline-ruby irb ri rubygems
但得到下面的错误
Building dependency tree
Reading state information... Done
Note, selecting 'ruby' instead of 'irb'
Note, selecting 'ruby' instead of 'rubygems'
Package libopenssl-ruby 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 'libopenssl-ruby' has no installation candidate
E: Unable to locate package libyaml-ruby
E: Unable to locate package libdl-ruby
E: Unable to locate package libiconv-ruby
E: Unable to locate package libreadline-ruby
我也尝试使用命令安装 rvm
\curl -L https://get.rvm.io | bash -s stable
但它也会给出以下错误
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
0 0 0 0 0 0 0 0 --:--:-- --:--:-- --:--:-- 0curl: (6) Could not resolve host: get.rvm.io
任何人都可以为此提出解决方案吗？