Correct Answer : pr
Explanation : The pr command is used for preparing a file by adding suitable headers, footers and formatted text. This command is used with a filename as an argument. For example,
$ pr dept.lst
May 06 10:38 1998 dept.lst Page 1
01:accounts:6213
02:admin:5423
03:marketing:6521
04:personnel:2365
.....blank lines.......​