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Exactly. I insisted so you are clear about the difference between exact and sloppy phrasing.
Excellent! What are the conclusions?

Shouldn't it read 15 items PLUS one EOF? The question was "How...

2 and 3 are wrong.

Welcome to the forum.

As to your questions:




May I question your reasoning?
a) Where in the script are S or R to be matched? Both upper case?
b) Do you know the meaning of the || ...

I'm glad to help, but: instead of delivering ready made answers, I prefer to make you cogitate and find the answers yourself.
Partly. Why should grep s try to match an S ? And, recheck your...

Do not post classroom or homework problems in the main forums. Homework and coursework questions can only be posted in this forum (https://www.unix.com/homework-coursework-questions/) under special...