NAME

       xscreensaver-getimage-file - select a random image file for use by screen savers

SYNOPSIS

       xscreensaver-getimage-file [--verbose] [--no-cache] [--flush-caches] directory-or-URL

DESCRIPTION

       The xscreensaver-getimage-file program is a helper program for the xscreensaver hacks that
       manipulate images.  It is invoked by xscreensaver-getimage(6x) as needed.

       It prints the  name  of  a  randomly-selected  image  file.   The  directory  is  searched
       recursively.  Non-image files and images smaller than 500x500 are excluded.

       The directory may also be the URL of an RSS/Atom feed.  Enclosed images will be downloaded
       and cached locally.

       The contents of the directory are cached, for performance.  The cache is re-generated if 3
       hours have passed.

OPTIONS

       xscreensaver-getimage-file accepts the following options:

       --verbose
           Print diagnostics.

       --no-cache
           Ignore the cache when searching for images.  This may be slow.

       --flush-caches
           Discard all caches immediately.  They will be re-generated as needed.

       directory-or-URL
           If a pathname it is the directory tree whose images should be used.

           If  a URL is specified, it should be the URL of an RSS or Atom feed containing images.
           The first time it is accessed, all of the images in the feed will be downloaded  to  a
           local  cache  directory.   The URL will be polled again when the cache times out.  Any
           new images will be downloaded and cached, and any images no longer in the feed will be
           discarded.

SEE ALSO

       X(1), xscreensaver(1), xscreensaver-settings(1), xscreensaver-getimage(6x)

COPYRIGHT

       Copyright © 2001-2021 by Jamie Zawinski.  Permission to use, copy, modify, distribute, and
       sell this software and its documentation for any purpose is hereby  granted  without  fee,
       provided that the above copyright notice appear in all copies and that both that copyright
       notice and this permission notice appear in supporting documentation.  No  representations
       are  made  about the suitability of this software for any purpose.  It is provided "as is"
       without express or implied warranty.

AUTHOR

       Jamie Zawinski <jwz@jwz.org>, 14-Apr-2001.