osx man page for mkfile

MKFILE(8)						      System Manager's Manual							 MKFILE(8)

NAME
       mkfile - create a file

SYNOPSIS
       mkfile [ -nv ] size[b|k|m|g] filename ...

DESCRIPTION
       mkfile  creates	one or more files that are suitable for use as NFS-mounted swap areas.	The sticky bit is set, and the file is padded with
       zeroes by default.  Non-root users must set the sticky bit using chmod(1).  The default size unit is bytes, but the following suffixes  may
       be used to multiply by the given factor: b (512), k (1024), m (1048576), and g (1073741824).

OPTIONS
       -n     Create an empty filename.  The size is noted, but disk blocks aren't allocated until data is written to them.

       -v     Verbose.	Report the names and sizes of created files.

WARNING
       If a client's swap file is removed and recreated, it must be re-exported before the client will be able to access it.  This action may only
       be done when the client is not running.

SEE ALSO
       chmod(2), stat(2), sticky(8)

								 1 September 1997							 MKFILE(8)