ubuntu@parichit:/$ find /etc /var/backups -name 'passwd*' -o -name '*shadow*' -ls
find: `/etc/ssl/private': Permission denied
  1810   12 -rw-r--r--   1 0        root         9887 Mar 31  2012 /etc/bash_completion.d/shadow
  1544    4 -rw-r-----   1 0        shadow        778 Feb 22 14:07 /etc/shadow