On linux server you may need to install ruby.you need to download ruby using wget command on linux. For doing this you need to have root access.

cd /usr/local/src
wget ftp.ruby-lang.org/pub/ruby/stable/ruby-1.8.4.tar.gz
tar xvzf ruby-1.8.4.tar.gz
cd ruby-1.8.4
./configure
make
make install
cd ..
wget http://rubyforge.org/frs/download.php/5207/rubygems-0.8.11.tgz
tar xvzf rubygems-0.8.11.tgz
cd rubygems-0.8.11
ruby setup.rb

Mysql:-
Default password is that there is no password. You can log in to mysql

for example with this command:

mysql -u root



There are also ways to change the password and you will find those

methods from the MySQL manual.



http://www.mysql.com/doc/en/index.html

after doing this command on commane prompt:-
mysql -u root



If this brings you to the 'mysql>' prompt then you can set the password to

First of all you should know  how you can add users in mysql databases:-

• Using CREATE USER and/or GRANT commands
• Inserting a new record into the mysql.user table
  

First let's see how to use the CREATE USER command:-

     CREATE USER user [IDENTIFIED BY [PASSWORD] 'password']

e.g