Exam LFCS topic 1 question 66 discussion

Actual exam question from Linux Foundation's LFCS

Question #: 66
Topic #: 1

[All LFCS Questions]

Which grep command will print only the lines that do not end with a / in the file foo?

A. grep '/$' foo
B. grep '/#' foo
C. grep -v '/$' foo
D. grep -v '/#' foo

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Suggested Answer: C 🗳️

by rhylos at July 11, 2021, 4:02 a.m.

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rona962

2 months, 4 weeks ago

Selected Answer: C

The grep command that will print only the lines that do not end with a / in the file foo is: C. grep -v '/$' foo Explanation: The option "-v" is used to invert the match, i.e., print lines that do not match the pattern. The pattern is '/$' which matches lines ending with a /. Therefore, "-v '/$'" matches lines that do not end with a /. Option A matches lines that end with a /, which is the opposite of what is requested. Option B matches lines that end with "/#" which is not relevant to the requested pattern. Option D matches lines that contain "/#" which is also not relevant to the requested pattern.

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