I need to create a script using linux rsync utility to periodically copy configurations to a backup device, from `$HOME/.config` to `$BACKUP_HOME/.config`. However, I would like to avoid copying cache and temporary files, and other sorts of generally unwanted files. How would you specify this command? Your answer should have exactly 4 paragraphs. Make sure that the last paragraph starts with the word "important" and that each paragraph is separated by two new lines.
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