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Energy efficiency is one of the very few measures widely used for evaluating green and sustainable software systems. This paper investigates the current measures of software sustainability from the four different software sustainability perceptions: Sustainability in Software Development, Green Software Systems, Software for Sustainability, Sustainability of the Software Eco System and Software Sustainability Dimensions (Economic, Social, Individual, Technical and Environment). While exploring the literature on green and sustainable software systems, measures of green software and software sustainability were identified, compiled and classified according to the four sustainability perceptions.