ocr: Figure 2 lechnique 2 - dual control directory with single group memberships PHOTECT CONTROL_R drwxr-X--- sysadm READ CONTROLU drwxrwx--- sysadm UPDATE hard link to DATA directory DATA drwxrwxr-x sysadm UPDATE cdata liless rw-rw-I-- sysadm UPDATE cdata subdirectories> drwxrwxr-x sysadm UPDATE
