Shell Programming and Scripting

Script 4
#To determine the permissions, owner and group of a file
#Syntax: script4 filename

LINE=`ls -ltr $1`
OWNER=`echo $LINE | awk '{print $3}'`
GROUP=`echo $LINE | awk '{print $4}'`
PERMISSION=`echo $LINE |
awk '{
        for (i=1;i<11;i++)
        printf(substr($1,i,1)" ");
}'`

#Output
echo "                  READ     WRITE   EXECUTE"
echo "OWNER      $OWNER $READ1  $WRITE1  $EXECUTE1"
echo "GROUP      $GROUP  $READ2   $WRITE2  $EXECUTE2"
echo "EVERYBODY           $READ3    $WRITE3  $EXECUTE3"

                        READ     WRITE   EXECUTE
OWNER   oliver.m
GROUP    users
EVERYBODY

while [ $PERMISSION !EOF]
do
read $PERMISSION
case "$PERMISSION" in
r)$READ1=YES;;
w)$WRITE1=YES;;
x)$EXECUTE1=YES;;
*)
esac
shift
done

while [ -n "$PERMISSION"  ];
do
case $PERMISSION in
r) READ1=YES;echo "read=YES";shift 1;;
w) WRITE1=YES;shift 1;;
x) EXECUTE1=YES;shift 1;;
*) echo "error";shift 1;;
esac
done