[cobalt-users] hacked?

["Linuxman" <linuxman@xxxxxxxxxxxxxxxx>]

I just found the file home/sites/usercheck.sh that I never saw before. Its
contents are the following script:

for a in `cat /tmp/sites`
do
 for b in `ls $a/users`
 do
  echo $a:$b
  #chown -R $b $a/users/$b
 done
done


Have I been hacked?