What is this about ?
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Flush a specific file to disk but not necessarily the whole disk and every disk on the system.

The point is that if you use the 'sync' it will schedule a flush for every disk on the system,
this can take a long time -- this allows you to flush just one file.
This allows you to just flush the data (ie not the metadata).

Why: if system service is interrupted at the wrong moment (eg crash or power fail)
what is in the filesystem on reboot might inconsistent. This is especially
true with files in the process of being updated; eg where a modified copy of a
file is created that is then renamed over the original.
Flushing blocks to disk can help to avoid problems.
This is a command line interface to the fsync(2) and fdatasync(2) system calls.

See:
	http://lwn.net/Articles/351422/

Installation
************

Compile and install somewhere, this is a single simple program.

Keeping up to date
******************

You may find newer versions of this software at:

	http://www.phcomp.co.uk/downloads.php

Where you will also find references to email lists that relate to this software.


Contributing
************

Fsync is free software (see the license). Free software grows and becomes more
powerful and useful as those who gain by using it contribute their changes back
to the original author.

Contributions to this software are welcome. Please email the author the following:

* your name & email address
* your affiliation (company/institute/...) if any
* the code
* documentation
* a statement that you are legally able to release the code and documentation
* a statement transfering copyright to the Author below giving permission that it
  may be redistributed as part of UserAdmin under an appropriate license

Contributions will be acknowledged in the Contributors file that accompanies this
software. If you do not want to be acknowledged please make that clear.

The author will be pleased to receive your comments, good or bad.


SCCS: @(#)README	1.1 11/14/11 22:20:17