Regex-style character classes : Dir « File Directory « Ruby

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Ruby » File Directory » Dir   Regex-style character classes Dir["mydir/[rs]*"]    # => ["mydir/ruby_script.rb", "mydir/subdirectory"] Dir["mydir/[^s]*"]    # => ["mydir/ruby_script.rb", "mydir/text_file"]   Related examples in the same category 1.  more concise way of getting directory listings is by using Dir's class array method 2.  a little more platform independent: 3.  Find all the "regular" files and subdirectories in mydir. 4.  Find all the .rb files in mydir 5.  Dir["mydir/**/*"] 6.  Dir["mydir/**/*file*"] 7.  Match any of the given strings 8.  Single-character wildcards 9.  Dir with patterns

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