ruby on rails installation on ubuntu

error on installation

ERROR: Loading command: install (LoadError) no such file to load -- zlib ERROR: While executing gem ... (NameError) uninitialized constant Gem::Commands::InstallCommand

wat should i do plz help as soon as possibl开发者_StackOverflow中文版e

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Try following this guide. its very good

http://ryanbigg.com/2010/12/ubuntu-ruby-rvm-rails-and-you

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I encountered the same problem when I was installing Rails on Ubuntu but I was able to install zlib and then proceeded to installing Rails.

Here's what I did:

1. Download and installed zlib from source.

   wget http://zlib.net/zlib-1.2.7.tar.gz
   tar -xvzf zlib-1.2.7.tar.gz
   cd zlib-1.2.7/
   sudo ./configure && sudo make && sudo make install

2. "Register" zlib module before recompiling and reinstalling Ruby

   cd ruby-source-distro-path/ext/zlib

   sudo ruby extconf.rb

   sudo make && sudo make install