Spell Check

I have this assignment and I am not sure how to start it, I am new any help will be appreciated....

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Let us say a test is conducted to assess the typing speed for applicants. We need to count # of correctly spelled words and penalize for incorrectly spelled words.

score = (# of correctly spelled words) - 2 * (# of incorrectly spelled words)

Assuming filename is words.txt, write a one-line command to compute the score.

Hint: use expr, wc, cat & spell commands. spell command outputs all incorrectly spelled
words.

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