Generate dummy files in bash

Question

I\'d like to generate dummy files in bash. The content doesn\'t matter, if it was random it would be nice, but all the same byte is also acceptable.

My first attempt was

Answer 1

If your file system is ext4, btrfs, xfs or ocfs2, and if you don't care about the content you can use fallocate. It's the fastest method if you need big files.

fallocate -l 100KB dummy_100KB_file

See "Quickly create a large file on a Linux system?" for more details.