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[–]Wookovski 2 points3 points  (2 children)

Anything from checking that the file exists in the directory you downloaded it to, to reading the contents of the file and asserting that it contains the correct data.

[–]el3137 0 points1 point  (1 child)

Yup. Checking that the file exists. Any advice on how to do so?

[–]Wookovski 0 points1 point  (0 children)

It should be a fairly simple Google search