Which command will display the last line of the file foo.txt?

The correct answer is D. tail -n 1 foo.txt. The tail -n 1 command displays exactly the last line of a file by limiting output to one line from the end.

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Question

Options

Ahead -n 1 foo.txt
Btail foo.txt
Clast -n 1 foo.txt
Dtail -n 1 foo.txt

How the community answered

(22 responses)

B
9% (2)
C
14% (3)
D
77% (17)

Why each option

The `tail -n 1` command displays exactly the last line of a file by limiting output to one line from the end.

Ahead -n 1 foo.txt

`head -n 1` displays the first line of the file, not the last line.

Btail foo.txt

`tail` without the `-n` flag defaults to displaying the last 10 lines, not just the last single line.

Clast -n 1 foo.txt

`last` is a system utility that displays a history of user logins and reboots; it does not read file content.

Dtail -n 1 foo.txtCorrect

The `tail` command reads from the end of a file, and the `-n 1` option restricts output to exactly one line. Together, `tail -n 1 foo.txt` prints only the final line of the file.

Concept tested: Linux tail command single last line retrieval

Source: https://man7.org/linux/man-pages/man1/tail.1.html

Topics

#tail command#last line display#file viewing#Linux CLI

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