Why Share File Pointers?

        #!/bin/sh
        echo "I like pie.";
        echo "Especially blackberry.";

• The first echo exits

• The shell then runs the second echo, which writes Especially blackberry starting at position 12

• What if the file pointer change hadn't survived the death of the first echo?

• The second echo would have written at position 0

• It would have overwritten the data left by the first echo!

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