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Explain that command line commands have $

This was extremely confusing to new programmers, also different operating systems call the command line something different
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schneems committed Oct 2, 2012
1 parent 6b1467b commit f8a54e16a99cc8a4af35f5b5f96b2fb3ba6bed1b
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@@ -77,6 +77,13 @@ TIP: The examples below use # and $ to denote superuser and regular user termina
### Installing Rails
+Open up a command line prompt. On a mac this is called terminal, on windows it is called command prompt. Any commands prefaced with a dollar sign `$` should be run in the command line. Verify sure you have a current version of Ruby installed:
+$ ruby -v
+ruby 1.9.3p194
To install Rails, use the `gem install` command provided by RubyGems:

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