Question: Write a test expression that returns a value indicating true or false when testing whether dir1 is a directory. Echo the results of this test

Write a test expression that returns a value indicating true or false when testing whether dir1 is a directory. Echo the results of this test to the terminal.

Write one test expression that returns a value indicating true or false when testing whether empty.txt is readable and is writeable. Echo the results of this test to the terminal.

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