# NAME

File::Open::NoCache::ReadOnly - Open a file and flush from memory on closing

# VERSION

Version 0.04

# SUBROUTINES/METHODS

## new

Open a file that will be read once sequentially and not again,
optimising the cache accordingly.
One use case is building a large database from smaller files that are
only read in once,
once the file has been used it's a waste of RAM to keep it in cache.

    use File::Open::NoCache::ReadOnly;
    my $fh = File::Open::NoCache::ReadOnly->new('/etc/passwd');
    my $fh2 = File::Open::NoCache::ReadOnly->new(filename => '/etc/group', fatal => 1);

## fd

Returns the file descriptor of the file

    my $fd = $fh->fd();
    my $line = <$fd>;

## close

Shouldn't be needed as close happens automatically when the variable goes out of scope.
However Perl isn't as good at reaping as it'd have you believe, so this is here to force it when you
know you're finished with the object.

# AUTHOR

Nigel Horne, `<njh at bandsman.co.uk>`

# BUGS

Please report any bugs or feature requests to
`bug-file-Open-NoCache-ReadOnly at rt.cpan.org`,
or through the web interface at
[http://rt.cpan.org/NoAuth/ReportBug.html?Queue=File-Open-NoCache-ReadOnly](http://rt.cpan.org/NoAuth/ReportBug.html?Queue=File-Open-NoCache-ReadOnly).
I will be notified, and then you'll
automatically be notified of progress on your bug as I make changes.

# SUPPORT

You can find documentation for this module with the perldoc command.

    perldoc File::Open::NoCache::ReadOnly

You can also look for information at:

- RT: CPAN's request tracker

    [http://rt.cpan.org/NoAuth/Bugs.html?Dist=File-Open-NoCache-ReadOnly](http://rt.cpan.org/NoAuth/Bugs.html?Dist=File-Open-NoCache-ReadOnly)

- Search CPAN

    [http://search.cpan.org/dist/File-Open-NoCache-ReadOnly/](http://search.cpan.org/dist/File-Open-NoCache-ReadOnly/)

# LICENSE AND COPYRIGHT

Copyright 2019-2024 Nigel Horne.

Usage is subject to licence terms.

The licence terms of this software are as follows:

\* Personal single user, single computer use: GPL2
\* All other users (including Commercial, Charity, Educational, Government)
  must apply in writing for a licence for use from Nigel Horne at the
  above e-mail.