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02-write-your-first-program/exercises/02/exercise.md

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+// ---------------------------------------------------------
+// EXERCISE
+//  Print your GOPATH using `go env` tool
+//
+// EXPECTED OUTPUT
+//  The physical folder path that is referenced by $GOPATH
+// ---------------------------------------------------------

02-write-your-first-program/exercises/02/solution/solution.md

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+You should type this:
+
+go env GOPATH