#!/bin/ksh
 
 /bin/rm index.dat
 
 set -A USER_HOME  /tmp/UserA /tmp/UserB /tmp/UserC /tmp/Root /tmp/GroupA /tmp/GroupB
 set -A USERS UserA UserB UserC Root GroupA GroupB
 
 for v in   ${USERS[*]} ; do
   find /tmp/$v -type f | awk -F. ' (NF == 2 ){ print $2 }' | sort -ud | tee -a index.dat
 done
 
 for type in $(<index.dat); do
   NewDir=/tmp/${type}-IndexedFileDir
   mkdir -p $NewDir
   find ${USER_HOME[*]} -type f -name "*.$type" -print | xargs -I{} -t mv {} ${NewDir}
 done