команда rvm install ruby 2.5.1 не даёт результатов. Логи :
Searching for binary rubies, this might take some time. No binary rubies available for: debian/9/x86_64/ruby-2.5.1. Continuing with compilation. Please read 'rvm help mount' to get more information on binary rubies. Checking requirements for debian. Installing requirements for debian. Updating systemThere has been an error while updating your system using `apt-get`. It seems that there are some 404 Not Found errors for repositories listed in: /etc/apt/sources.list /etc/apt/sources.list.d/*.list Make sure that all repositories are available from your system and verify your setup by running manually: sudo apt-get update Make sure that it works correctly before proceeding with RVM. If you are working from the GUI instead of the terminal, you might want to verify and fix broken repositories using "Software & Updates" application. ....................... Error running 'requirements_debian_update_system ruby-2.5.1', please read /home/invo/.rvm/log/1528116292_ruby-2.5.1/update_system.log Requirements installation failed with status: 100.