题目内容

Which commands can be used to print the lines that contain the numbers 0–5 in a file? Select all answers thst apply.

A. grep [0,1,2,3,4,5] filename
B. grep [0-5] filename
C. grep [-e0 -e1 -e2 -e3 -e4 -e5] filename
D. grep {0-5} filename

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In search patterns, what is the syntax to match the end of the string?

A. .
B. ^
C. $
D. *

Which command will combine two files that share a common field?

A. merge
B. paste
C. join
D. cat

Identify the command option that should be present in the paste command to combine two files with a specified delimiter.

A. -d
B. -n
C. -t
D. -r

Consider a data file /usr/data/employee that contains the information of 300 employees, in the following format:(emp-name:age:date-of-birth). Select the correct syntax of the awk command that prints the name and date-of-birth.

A. $ awk -F: '{ print $1 ; $3 }' /usr/data/employee
B. $ awk -F: '{ print $1 & $3 }' /usr/data/employee
C. $ awk -F: '{ print $1 $3 }' /usr/data/employee
D. $ awk -F: '{ print $1 - $3 }' /usr/data/employee

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