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There are several packages that you can download and install. The prebuilt Rails installer called Install rail which currently is only for Windows.
Rails will report errors from Apache in log/apache.log and errors from the Ruby code in log/development.log. If you're having a problem, do have a look at what these logs are saying. On Unix and Mac OS X you may run tail -f log/development.log in a separate terminal to monitor your application's execution.
A method that loads and processes the Ruby code from a separate file, including whatever classes, modules, methods, and constants are in that file into the current scope. load is similar, but rather than performing the inclusion operation once, it reprocesses the code every time load is called.
auto_load - Whenever the interpreter call the method that time only it will initiate the method in hat file.
require_relative - It it to load local folder files.
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