One thing you could try is to use tar with the --exclude-from option. This will exclude patterns read from a file.
For example, adapted from the Tar manual:
cd sourcedir; tar -cf --exclude-from excludelist - . | (cd targetdir; tar -xf -)
If you will be depending on find and tar for backups, I would recommend generating the printable version of the docs from the find-utils and tar source. The Finding Files manual is very useful.
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