题目内容

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

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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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Which of the following commands will replace all instances of the word "dog" with "pig" in the file named "some_file" and send the output to stdout? Select all answers that apply.

A. sed -e s/dog/pig/g some_file
B. sed -e s/dog/pig/ some_file
C. sed -e s:dog:pig:g some_file
D. cat some_file | sed -e s/dog/pig/g

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Which of the following commands can be used to view the last 15 lines of a file? Select all answers that apply.

A. tail +15 some_file
B. tail -15 some_file
C. tail -n15 some_file
D. tail=15 some_file

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Which command is used to combine three files into a fourth file?

A. cat file1 file2 file3 > file4
B. cp file1 file2 file3 > file4
C. cat file1 > file2 > file3 > file4
D. cat file1 > file2 > file3 | file4

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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.

Which of the following commands will replace all instances of the word "dog" with "pig" in the file named "some_file" and send the output to stdout? Select all answers that apply.

Which of the following commands can be used to view the last 15 lines of a file? Select all answers that apply.

Which command is used to combine three files into a fourth file?

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