updateThumbnails updateThumbnails is a tool to keep local thumbnails in large trees of photos and other images up to date.
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updateThumbnails Description

updateThumbnails is a tool to keep local thumbnails in large trees of photos and other images up to date. updateThumbnails is a tool to keep local thumbnails in large trees of photos and other images up to date. PurposeAfter years of digital photography a huge collection of pictures has grown. And, over the years I use different tools for browsing and sorting these photos. In addition the photos are shared via NFS and SAMBA over my private network. In this case I thought of thumbnails which are part of my directories where the photos itself are placed. To manage these thumbnails, I wrote updateThumbnails. updateThumbnails is running on Linux, and should also work on other UNIX platforms as long as the packages are available which updateThumbnails depends on.Here are some key features of "updateThumbnails":· stores the thumbnails of photos in a dot directory · stores thumbnails for different applications and sizes · supports XV thumbnails · supports generation of GNOME local thumbnails as used by GQview · only generates thumbnails if the original image has changed · removes thumbnails where the original file no longer existsInstallation:Download the tar ball, extract it and start the installation as root:tar xvzf updateThumbnails-1.1.tgz updateThumbnails-1.1/INSTALL Usage:Before the first use of updateThumbnails you have to create a dot file in your home directory named .updateThumbnails.rc which could look like this:# # updateThumbs rc file # THUMBNAILS="SCREEN THUMBS THUMBLOCAL XVPICS" # # screen resolution file dimensions # SCREEN_WIDTH=800 SCREEN_HEIGHT=400 # # thumbs resolution file dimensions # THUMBS_WIDTH=128 THUMBS_HEIGHT=128 # # thumblocal resolution file dimensions # THUMBLOCAL_WIDTH=128 THUMBLOCAL_HEIGHT=128 # # xvpics resolution file dimensions # XVPICS_WIDTH=80 XVPICS_HEIGHT=60 # # JPG quality for JPG files # JPG_QUALITY=80 # # file extensions to scan # EXTENSIONS="jpg png" # # directories to scan # DIRECTORIES=" /home/gromeck/remote/Photos/Incoming /home/gromeck/remote/Photos/PrintService /home/gromeck/remote/Photos/Sorted /home/gromeck/remote/Photos/Unsorted /home/gromeck/remote/Photos/Photoart " But what does this all mean? So, let's have a look:THUMBNAILS holds a list of names which updateThumbnails should process. For each of these names, a subdirectory will be created (where the directory name is this name in lower case, preceeded by a dot). In the example: the directories .screen, .thumbs, .thumblocal, and .xvpics will be generated in each directory updateThumbnail is going to process. NOTE: the processing of THUMBLOCAL and XVPICS will trigger a special handling in updateThumbnails. For each of the named thumbnails in THUMBNAILS, a definition of the with and height should be done, so that updateThumbnails will know the dimensions of the thumbnails. NOTE: the thumbnails in THUMBNAILS should be arragned from largest to smallest thumbnail dimensions, because updateThumbnails will generate a thumbnail from the next larger thumbnail before the original image will be used. This gives a dramatic speed-up of the thumbnail processing. The JPG_QUALITY can be used to fine tune the compression rate of JPEG images. EXTENSIONS holds the extensions of images updateThumbnails will search. DIRECTORIES is a list of directories updateThumbnails should process if no directory is given on the command line.

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