Need help to install rails on Ubuntu

[manisha]

Hi friends.

I am trying to install Ruby on rails on Linux platform.The OS i am using is Ubuntu.
I am new to both Linux and RoR .So really need help.Here is the code i tried to run and the result :

manisha@manisha-desktop:~$ sudo gem install rails --include-dependencies

/usr/bin/gem:11:Warning: Gem::manage_gems is deprecated and will be removed on or after March 2009.
INFO: `gem install -y` is now default and will be removed
INFO: use --ignore-dependencies to install only the gems you list
ERROR: http://gems.rubyforge.org/ does not appear to be a repository
ERROR: could not find gem rails locally or in a repository

I tried many probable solutions , but none is working.I am just unable to figure out any more.May be someone can help.I will be very thankful.

[destin]

Do you have a firewall that's getting in the way?

[manisha]

yes i have the firewall and i aslo set the required proxy for that.it was working on windows but dont know why it isnt working for linux.

[destin]

Try specifying the proxy in the gem command with sudo gem install rails -p [proxy url]:[port] . If that doesn't work, try setting the environment variable with set HTTP_PROXY=[proxy url]:[port]

[manisha]

I have already set the proxy.But still it wasnt working. Now when i used the proxy thing along the command,
I can just do
$ sudo gem update

Even I am having error to do

$ sudo gem update --system

I dont understand why this is happening :(

[MrAntonio]

Hi guys,
There was such problem as at manisha, thanks a lot destin your recommendations have helped! :-)