mkfile
Create one or more empty files of any size.
TLDR
Create an empty file of 15 kilobytes
$ mkfile -n [15k] [path/to/file]
Create a file of a given size and unit (bytes, KB, MB, GB)
$ mkfile -n [size][b|k|m|g] [path/to/file]
Create two files of 4 megabytes each
$ mkfile -n [4m] [first_filename] [second_filename]