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Albert Einstein, when asked to describe radio, replied: "You see, wire telegraph is a kind of a very, very long cat. You pull his tail in New York and his head is meowing in Los Angeles. Do you understand this? And radio operates exactly the same way: you send signals here, they receive them there. The only difference is that there is no cat."
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,-^-. !oYo! /./=\.\______ ## )\/\ ||-----w|| || ||
cat fich1.txt fich2.txt > uniao