Which of the following commands is most useful for viewing large files?

A.
cp

B.
cat

C.
less

D.
touch

Explanation:

The less command is most useful for viewing large files. The less command displays the output of
a file one page at a time. Viewing large files through cat may take more time to scroll pages, so it
is better to use the less command to see the content of large files.
Answer option B is incorrect. The cat command is also used to view the content of a file, but it is
most useful for viewing short files.
Answer option A is incorrect. The cp command is used to copy files and directories from one
location to another.
Answer option D is incorrect. The touch command is not used to view the content of a file. It is
used to create empty files or to update file timestamps.