Linux Foundation Certified System Administrator
Question
Which grep command will print only the lines that do not end with a / in the file foo?
Answers
Explanations
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A. B. C. D.C
The correct answer is C. grep -v '/$' foo
Explanation:
The grep command is a powerful tool used for searching text patterns in files. In this case, we are searching for lines in the file "foo" that do not end with a forward slash (/).
Let's break down the options provided:
Option A: grep '/$' foo This option searches for lines in the file "foo" that end with a forward slash (/). However, the question asks for lines that do not end with a forward slash (/). Therefore, this option is incorrect.
Option B: grep '/#' foo This option searches for lines in the file "foo" that contain a forward slash (/) followed by a hash symbol (#). This option is not relevant to the question and is incorrect.
Option C: grep -v '/$' foo This option uses the -v flag which tells grep to invert the search, meaning it will print lines that do not match the pattern / $. The pattern / $ matches lines that end with a forward slash (/). Therefore, this option is correct for the given question.
Option D: grep -v '/#' foo This option is the same as Option C but searches for lines that do not contain a forward slash (/) followed by a hash symbol (#). This option is not relevant to the question and is incorrect.
Therefore, the correct answer is Option C, grep -v '/$' foo.
