Exam 101-500 topic 1 question 43 discussion

Actual exam question from LPI's 101-500

Question #: 43
Topic #: 1

Which of the following commands changes all CR-LF line breaks in the text file userlist.txt to Linux standard LF line breaks and stores the result in newlist.txt?

A. tr -d '\r' < userlist.txt > newlist.txt
B. tr -c '\n\r' '' userlist.txt
C. tr '\r\n' '' newlist.txt
D. tr '\r' '\n' userlist.txt newlist.txt
E. tr -s '/^M/^J/' userlist.txt newlist.txt

Show Suggested Answer

Suggested Answer: A 🗳️

by AdamCzepiel at Oct. 21, 2022, 8:49 p.m.

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Ninymo

5 months, 2 weeks ago

Answer: A

upvoted 1 times

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Ralf_G

6 months, 1 week ago

The syntax salad that is given here as possible answers does not exist. The correct answer is: A) $ tr -d '\r' < userlist.txt > newlist.txt

upvoted 1 times

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JopieJo

1 year, 7 months ago

Agree with opt A: Only delete (tr -d) the Carriage Return (CR) character (0x0D, \r) and leave the Line Feed (LF) character (0x0A, \n) in tact. tr -d '\r' <input file> <output file>

upvoted 2 times

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AdamCzepiel

1 year, 10 months ago

checked, correct -> https://stackoverflow.com/questions/2613800/how-to-convert-dos-windows-newline-crlf-to-unix-newline-lf