Describes the cause and action for error messages.
Error Message(English)：
unable to look up github.com
Installation fails behind proxy server ・ Issue #63 ・ ekg/freebayes ・ GitHub
https://github.com/ekg/freebayes/issues/63
Problem with proxy, unable to look up github.com ・ Issue #944 ...
https://github.com/saltstack/salt-bootstrap/issues/944
`npm install` on Windows fails because of `git://` url in package.json ...
https://github.com/google/marzipano/issues/199
"fatal: Unable to look up github.com (port 9418)"というエラーが表示される
http://kuttsun.blogspot.com/2015/12/fatal-unable-to-look-up-githubcom-port.html
Gemfileに github: xx って書いたら、Proxy環境のRailsでbundle installに ...
http://smallstepeveryday.blogspot.com/2014/05/gemfile-github-xx-proxyrailsbundle.html
fatal: Unable to look up github.com (port 9418) (Name or service not ...
https://www.question-defense.com/2009/03/25/fatal-unable-to-look-up-githubcom-port-9418-name-or-serv・・・
Unable to look up github.com (port 9418) (No such host is known ...
https://stackoverflow.com/questions/22815997/unable-to-look-up-github-com-port-9418-no-such-host-is-・・・
how to solve git error while installing linkedin from git://github ...
https://stackoverflow.com/questions/10169991/how-to-solve-git-error-while-installing-linkedin-from-g・・・
プロキシ経由で submodule と一緒に git clone する ? a wandering wolf
https://gab-km.bitbucket.io/blog/html/2014/02/04/git_clone_including_submodule_behind_proxy_server.h・・・