ruby-on-rails - 如何在 ubuntu 16.04 中将 ruby​​ 从 2.0.0 更新到 2.2.2？

Question

我正在使用 ubuntu 16.04、ruby 2.0.0、rails 4.0.13 和 mongoDB 3.4.2。
我想将 ruby​​ 更新到 2.2.2，但出现错误:

Error running 'requirements_debian_update_system ruby-2.2.6',
showing last 15 lines of /home/lakhvir/.rvm/log/1487593522_ruby-2.2.6/update_system.log
++ case "${TERM:-dumb}" in
++ case "$1" in
++ [[ -t 2 ]]
++ return 1
++ printf %b 'There has been error while updating '\''apt-get'\'', please give it some time and try again later.
404 errors should be fixed for rvm to proceed. Check your sources configured in:
    /etc/apt/sources.list
    /etc/apt/sources.list.d/*.list
\n'
There has been error while updating 'apt-get', please give it some time and try again later.
404 errors should be fixed for rvm to proceed. Check your sources configured in:
    /etc/apt/sources.list
    /etc/apt/sources.list.d/*.list

++ return 100
Requirements installation failed with status: 100.

Answer 1

首先，您应该立即升级 Rails 版本:
Ruby on Rails 4.0 End of Life was in January 2015.

至于另一个错误，它看起来像 apt-get update 不知何故窒息。在通过 rvm 之前，我会先尝试修复它。

apt-get update

和

apt-get dist-upgrade

(确保在运行它们之前了解它们的作用)。如果您在那里遇到错误，请确保您的

/etc/apt/sources.list
/etc/apt/sources.list.d/*.list

文件都是正确的。