gistfile1.txt

class AckWindowController < NSWindowController
    
    attr_writer :directoryPath
    attr_accessor :searchQuery, :tableView, :searchButton
    
    def runQuery(sender)
        
        # arguments = ["--output=\"\\n$\\`\\n$&\\n$'\"", self.searchQuery.stringValue];
        arguments = [self.searchQuery.stringValue];
        bundle_path = NSBundle.mainBundle.resourcePath
        
        cmd = "#{bundle_path}/ack -Q #{arguments.join " "}"
        
        puts "------ Dir.chdir: #{@directoryPath}"
        Dir.chdir @directoryPath
        
        puts "------ Running: #{cmd}"
        puts `#{cmd}`
    end
end


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Output: 


------ Dir.chdir: /Users/majd/github/sproutcore20
------ Running: /Users/majd/Library/Developer/Xcode/DerivedData/VimAck-dljtoceskfuszeeafrbvgdtzqcxh/Build/Products/Debug/VimAck.app/Contents/Resources/ack -Q SC.Object