Which of the following commands will output all of the lines that contain either the string Fred or fred?
A) grep -v fred data_file
B) grep '[f]red' data_file
C) egrep fred data_file
D) grep '[Ff]red' data_file
E) grep -i fred data_file

Question

Quizplus · Accepted Answer

The command "grep '[Ff]red' data_file" searches for lines containing either "Fred" or "fred" by using a character class. The command "grep -i fred data_file" performs a case-insensitive search, matching both "Fred" and "fred".

Which of the Following Commands Will Output All of the Lines