bash: array

PACKAGES=`cat packages.txt`
i=1
for PACKAGE in $PACKAGES
do
    array[$i]=" <package>$PACKAGE</package>"
    (( i++ ))
done
 
anz=$(( ${#array[@]} ))
for ((i=1; i<=$anz ; i++)) do
        echo ${array[$i]};
done

data1=$(cat <<EOF
a
b
c
EOF
)
 
echo "$data1"