I use the rvm1.8.7,but when i use to install the rails v=2.3.11 it throws the error

ERROR: Could not find a valid gem 'rails' (= 2.3.11) in any repositor开发者_运维百科y

any one help me Pleace

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Use gem install rails -v=2.3.11 or gem install rails --version=2.3.11

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This method should solve your issue:

$ gem install --http-proxy http://201.187.107.19:8080 rails

Note, the IP address and the port number refers to a proxy. You should search for a proxy list and use one of the proxies there.

This is sample site with proxies: http://www.cybersyndrome.net/pla5.html