func runCommand(command: String) -> String {
           let task = Process()
           task.launchPath = "/bin/bash"
           task.arguments = ["-c", command]

           let pipe = Pipe()
           task.standardOutput = pipe
           task.launch()

           let data = pipe.fileHandleForReading.readDataToEndOfFile()
           let output: String = NSString(data: data, encoding: String.Encoding.utf8.rawValue)! as String

           return output
       }