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This is not correct. The Output of the file should show ONLY the line whose sting doesn't match with Banned.txt file. Which means, all the domains / strings listed in the Banned.txt file should get deleted in the first file Emails.txt
– Joney Walker
Commented Jan 23, 2019 at 12:46
That's the purpose of the -v. Have you tried it?
– Joce
Commented Jan 23, 2019 at 12:48
1

grep -vf worked like a charm... Thanks.
– Joney Walker
Commented Jan 23, 2019 at 12:58
1

After some more research, I found - Rather using a long regex, this works with this simple line too: grep -vf <(sed 's/$/$/' Banned.txt) Emails.txt
– Joney Walker
Commented Jan 28, 2019 at 12:04
1

@JoneyWalker Indeed that's shorter!
– Joce
Commented Jan 28, 2019 at 15:27

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