How do I remove matching lines from one text file using another?

Question

I am trying to remove matching lines from one text file using another. For example, fired.txt contains:

Jason
Candice
Brent
Tom

And I want to remove matching lines from workers.txt, which currently looks like this:

Andrew
Tommy
Peter
Jason
Brent
Sasha
Tom
Candice

So, in the end, it would remove the entire line if it matches exactly, so it would look like this:

Andrew
Tommy
Peter
Sasha

I am using macOS Sierra, btw.

Answer 1

Short grep approach:

grep -xvf fired.txt workers.txt

The output:

Andrew
Tommy
Peter
Sasha

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grep options:

• x - Select only those matches that exactly match the whole line

• v - Invert the sense of matching, to select non-matching lines

• f (--file=file) - Obtain patterns from file, one per line