#!/bin/ksh                                                                       
                                                                                 
okay=$(head -1 $1 | awk '{print substr($0, length($0)-2)}' | \
       awk '{print index("001|004|007",$0)}')                                                              
if  [[ $okay -gt 0 ]]  then
      print "okay"
else
      print "not okay"
fi