Produce MD5 hash of dir, compare to an old reference, get new file list, remove duplicates, send the file list to a remote clamav.
Generate MD5 hash of dir
# /local/bin/gem-md5 -d /var/www/html > var_www_html.0
# sort var_www_html.0 > new
# sort previousMD5 > old
Diff from previous MD5 hash
# diff --changed-group-format='%>' --unchanged-group-format='' new old > diffs
Select only new files
# cat diffs | /local/bin/uniqfields | /local/bin/sendtoclamd