fallocate --version (return code: 0)
fallocate from util-linux 2.27.1
fallocate --help (return code: 0)
Usage:
fallocate [options] <filename>
Preallocate space to, or deallocate space from a file.
Options:
-c, --collapse-range remove a range from the file
-d, --dig-holes detect zeroes and replace with holes
-l, --length <num> length for range operations, in bytes
-n, --keep-size maintain the apparent size of the file
-o, --offset <num> offset for range operations, in bytes
-p, --punch-hole replace a range with a hole (implies -n)
-z, --zero-range zero and ensure allocation of a range
-v, --verbose verbose mode
-h, --help display this help and exit
-V, --version output version information and exit
For more details see fallocate(1).