Alternatively:<p><pre><code> find -type f -exec md5sum '{}' ';' | sort > md5.out
gawk '{print $1}' md5.out | uniq -c | gawk '$1>1' > md5.dups
for m in $( gawk '{print $2}' md5.dups )
do
grep ^$m md5.out
echo
done</code></pre>