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Is the line above grammatically correct?
What is the correct one and what is the difference between both of them ?
It really depends on the circumstances that you find both in. In each case adding "The" to the front of the line would improve it, and the bottom line is certainly the easiest on the ears and rolls off the tongue. However, as I assume this is being used with regards computing, the top line is shorter and does give the same impression to the computer savvy.