ubuntu error list

Q. gem install mysql error
A.sudo apt-get install libmysql-ruby libmysqlclient-dev libmysqlclient12-dev
  necessary file required to load first
 
Q.git clone the requested url return error 403
A. switch to git:// protocol 

Q. WARNING: Unable to verify SSL certificate for api.heroku.com
To disable SSL verification, run with HEROKU_SSL_VERIFY=disable
A. install <2.0.0 heroku

Q. uninitialize constant Rake::DSl
A. remove rake 0.9.2
   use 0.8.7 like (gem "rake","0.8.7")

Q. fatal: Not a git repository (or any of the parent directories): .git
A. git init

Q. The remote end hung up unexpectedly
A. git commit -m "initial inport" .

Q.ruby-1.9.2-p290 :001 > require 'mylibrary'
LoadError: no such file to load -- mylibrary
	from /home/user/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:in `require'
	from /home/user/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:in `require'
	from (irb):1
	from /home/user/.rvm/rubies/ruby-1.9.2-p290/bin/irb:16:in `<main>'

A. I have changed the ruby file to 1.8.7


Q. Mongrel installation ERROR: Failed to build gem native extension. 
A. rvm 1.9.2 gem install mongrel --pre

Q. remote desktop is not working
A. sudo apt-get install openssh-servere

Q.Remote desktop view
A. rdesktop ps5973(machine name)